Blue blood is flowing in London as a killer slits the throats of the cream of England's aristocracy. Naturally Scotland Yard enlists the great Sherlock Holmes himself. Only when this ultimate weapon of the law failed to stem the deaths are they forced to play a last desperate card - Professor James Moriarty, the Napoleon of Crime, who had his own methods of fighting evil...

In London, 1892, a well-guarded young nobleman goes missing under distressing circumstances. The nobleman, one Baron Renfrew, is actually Prince Albert Victor, eldest grandson of Queen Victoria. He disappeared while he was visiting a house of ill repute, with bodyguards both inside and outside the building - with his inside bodyguard rendered unconscious and the trussed-up corpse of a brutally murdered young woman left behind. Hoping to find the missing Prince and to clear him of the murder, the royal family is looking for a brilliant - and, more importantly, discreet - investigator. Sherlock Holmes, alas, is out of the country so, at the suggestion of his brother Mycroft, they turn to the only man who just might be more brilliant - Dr James Moriarty.

Counter-intelligence agent Jacob Welker recruits a number of civilians to help foil a suspected terrorist attack by German spies in New York in 1938. March, 1938. Otto Lehman arrives in New York on the S.S. Osthafen to be immediately confronted by two men with FBI badges . . . only, that isn't his real name and the men aren't with the FBI. The next day Lehman is found tied to a chair, beaten to death and naked, in an abandoned Brooklyn warehouse. The sole witness to the crime, Andrew Blake, a homeless man struggling through the Great Depression, claims those responsible were speaking German. With the threat of the perpetrators being Nazis, President Roosevelt's own covert counter-intelligence agent Jacob Welker is brought in to investigate. Welker recruits Blake along with Lord Geoffrey Saboy, a British 'cultural attache', and his wife Lady Patricia, to help him to thwart a Nazi terrorist attack. But who exactly are the Nazis, what is their target and when will they strike?

When American journalist Benjamin Barrett is sent to Constantinople to report on the sea trials of a new submarine, the assignment soon becomes more eventful than he had predicted, particularly after rescuing a certain professor from an attack...

Counter-intelligence agent Jacob Welker is on a special mission to find a group of scientists who could change the course of World War II in this smartly written historical espionage thriller. September 1939. Germany has declared war on Poland, and in German Pomerania, Professor Josef Brun is on the run from the SS, carrying secret documents that could change the course of the war. If he can make it to France or Britain. If he can survive . . . In America, counter-intelligence agent Captain Jacob Welker is handed a special assignment from President Roosevelt. Einstein believes the Nazis are aware of a new super weapon made possible by advances in atomic science, and only a small group of scientists can stop them winning the race to develop it. Enlisting the help of his British friends, Lord Geoffrey and Patricia Saboy, Welker must find the scientists and get them out of Germany from under the Nazi's noses. As a dangerous new world of physics gathers pace, can Welker prevent the war taking a catastrophic new turn?

Counter-intelligence agent Jacob Welker is on a special mission to find a group of scientists who could change the course of World War II in this smartly written historical espionage thriller. September 1939. Germany has declared war on Poland, and in German Pomerania, Professor Josef Brun is on the run from the SS, carrying secret documents that could change the course of the war. If he can make it to France or Britain. If he can survive . . . In America, counter-intelligence agent Captain Jacob Welker is handed a special assignment from President Roosevelt. Einstein believes the Nazis are aware of a new super weapon made possible by advances in atomic science, and only a small group of scientists can stop them winning the race to develop it. Enlisting the help of his British friends, Lord Geoffrey and Patricia Saboy, Welker must find the scientists and get them out of Germany from under the Nazi's noses. As a dangerous new world of physics gathers pace, can Welker prevent the war taking a catastrophic new turn?

"It's a Mystery to Me "is a book every fledgling writer of crime stories should read and study. It's packed with the kind of practical advice, incisively and wittily presented, that only a seasoned professional can provide. Kudos to Michael Kurland for a masterful how-to-dunnit. -- Bill Pronzini

Set in an alternative reality where "All the President's men" do not get caught at Watergate, this "shockingly believable" novel presents the frightening scenario of what could happen if a powerful but paranoid American chief executive goes out of control. "-The dirty tricks have just begun; rape, murder, plot and counterplot...are nothing to this imperial President..."-Publishers Weekly. " T]he authors have brought a chilling sense of reality to their fast-paced, smoothly-written thriller. It may be fiction, but it is close enough to fact to be genuinely terrifying."-The Miami Herald.

When the young apprentice Delbit Quint is "bought" by Dr. Faineworth, he arrives in an alternate history version of New York City to help the good doctor with his investigation of "Exxa." This beautiful young woman had just appeared from nowhere, without clothing, on the streets of Gotham two weeks earlier, her memories of herself and her background completely lost. But when they go to her cell, they find it empty--save for her loose garments. Thus begins a glorious adventure in parallel universe-jumping, as Delbit discovers the reality of the world in which he lives--and the many other strange and interesting variations of Earth surrounding it in the Paraverse. Not all of those who've developed the capability of jumping to these alternate realities are friendly, however. And ALL of them want Exxa, who has the unique ability of moving from one world to the other without mechanical assistance. Great SF and fantasy adventure by a master storyteller

In the tradition of the old Ace Double two-in-one books (flip one book over to read the other), here's the seventh Wildside Mystery Double: VICTORIAN VILLAINY: A Collection of Moriarty Stories, by Michael Kurland. Among the world's great fictional villains, Prof. James Moriarty, Sherlock Holmes's chief nemesis, stands alone. But how evil was he? These four stories suggest that Moriarty wasn't evil at all--and the reason for Holmes's characterization of him as "The Napoleon of Crime" was quite simple: Moriarty was the smarter of the two, and Holmes just couldn't stand it Great Victorian mystery tales THE TRIALS OF QUINTILIAN: Three Stories of Rome's Greatest Detective, by Michael Kurland. Set at the height of the Roman Empire, these tales chronicle one of the few actual crime-solvers known to have lived in the ancient world. Quintilian, a teacher, jurist, and friend of Emperor Vespasian, was also something of a detective. The first tale in this volume, "Blind Justice," is based on an actual case he's said to have solved while acting as defense counsel in a trial. Great historial mysteries

Lord Darcy and Master Wizard Sean O Lauchlainn return in this authorized sequel to the stories of Randall Garrett. In 1988, in an alternate universe in which the Plantagenets still rule Britain, France, and the New World, and where magic has displaced science, King John IV's chief detectives are called in to investigate a series of impossible murders of accomplished sorcerers. As the bodies pile up, and the monarch himself is threatened, Darcy and Sean must race against the clock to find the killer before the political balance of Europe is upset. Great fantasy (and mystery) adventure!

In the tradition of the old "Ace Doubles" two-in-one books (flip one over to read the second title)--here is the twelfth Wildside Double: LISA KANE: A NOVEL OF WEREWOLVES, by Richard A. Lupoff. Lisa is a 12-year-old girl with all the worries of any normal girl beginning the transition to womanhood. She's frightened by the changes happening to her body--the budding breasts, the stiff black hairs that appear on the back of her hands, and the way her nails twist to look like claws during the full moon. Is this normal? Why is she so different from everyone else? Scott A. Culp says: "A good book...that does not deserve to be forgotten." THE PRINCES OF EARTH: A SCIENCE FICTION NOVEL, by Michael Kurland. Adam Warrington is a young man from a repressive plant in the grasp of fundamental Puritanism. Then he's accepted by the University of Sol on Mars, and his great adventure begins. On the way there his spaceship is hijacked by a disgruntled noble who wants to overthrow the emperor, and Adam is forced to choose sides. A grand tale in the tradition of Robert A. Heinlein. A Young Adult Literary Guild Selection.

With an introduction by Leslie S. Klinger, editor and compiler of all three volumes of "The Annotated Sherlock Holmes", this collection of ten original stories brings light to one of the least examined periods in the life of the great detective - his time in the former colonies, the United States. This Holmes is a youthful one - a young man not yet set upon his course in life and in his famous lodgings at 221B Baker Street. In Richard Lupoff's "Inga Sigerson Weds", he's come to America to represent the family at his sister's wedding. In "My Silk Umbrella", Mark Twain narrates his fateful encounter with Holmes at a baseball game in Hartford, Connecticut; Steve Hockensmith narrates the meeting of the young William Gillette and the object of his later, most famous turn upon the stage; and, Peter Tremayne reveals the intersection of Holmes and the Irish in the 19th century American midwestern landscape. With further stories by Marta Randall, Rhys Bowen, Peter Beagle, and others, the legend, the mythology and even the history of the world's greatest detective is further enhanced by these charming, clever and mystifying tales.

"This thoroughly involving thriller stands proudly alongside Dan Fesperman's The Letter Writer (2016), Elmore Leonard's Up in Honey's Room (2007), and John Dunning's Two O'Clock, Eastern Wartime (2001), among others. Great stuff" - Booklist Starred Review Counter-intelligence agent Jacob Welker recruits a number of civilians to help foil a suspected terrorist attack by German spies in New York in 1938. March, 1938. Otto Lehman arrives in New York on the S.S. Osthafen to be immediately confronted by two men with FBI badges . . . only, that isn't his real name and the men aren't with the FBI. The next day Lehman is found tied to a chair, beaten to death and naked, in an abandoned Brooklyn warehouse. The sole witness to the crime, Andrew Blake, a homeless man struggling through the Great Depression, claims those responsible were speaking German. With the threat of the perpetrators being Nazis, President Roosevelt's own covert counter-intelligence agent Jacob Welker is brought in to investigate. Welker recruits Blake along with Lord Geoffrey Saboy, a British 'cultural attache', and his wife Lady Patricia, to help him to thwart a Nazi terrorist attack. But who exactly are the Nazis, what is their target and when will they strike?

NEW YORK CITY, 1935. NEWSPAPER COLUMNIST EXTRAORDINAIRE ALEXANDER BRASS NEEDS A STORY...It all begins when a furtive tipster promises an explosive story and gives Morgan DeWitt-assistant to New York World celebrity newsman Alexander Brass-an envelope filled with photographs of the most compromising nature. When the tipster turns up murdered, Brass and his team resolve to find the killer, running the gauntlet of blackmailing Nazis, accommodating nymphomaniacs and US senators on the way...

Fine and Dandy chorine Lydia Laurent's strangled, nude body, accompanied by two complete suits of clothing, has been found in Central Park, and now Two-Headed Mary and Billie Trask are missing too. Since the police are as helpless as they always are in 1935, it falls to New York World columnist Alexander Brass and his cheerfully wide-eyed sidekick Morgan DeWitt to dig up the truth.