While flying from New York to London US Federal Air Marshal Bill Marks (Neeson) receives text messages from an anonymous sender who is threatening to murder a passenger every 20 minutes until millions of dollars are deposited into an unnamed bank account.

Marks faces a race against time to find and restrain the person responsible but when the bank account is found out to be in his name he is accused of being the hijacker. As victims are claimed, Marks discovers a bomb on board the aircraft which only exacerbates his predicament.

Can he find the culprit in order to save the remaining passengers and prove his innocence?

The entire third series of the ITV costume drama following the lives and loves of those above and below stairs in an English stately home. With World War One finally over, the 1920s heralds the promise of a new age for those at Downton Abbey. But while the family prepare for the wedding of Lady Mary (Michelle Dockery) and Matthew (Dan Stevens), Lord Grantham (Hugh Bonneville) learns that the future of Downton is in grave jeopardy after the collapse of investments made with his wife (Elizabeth McGovern)'s fortune. With the family beginning to gather for the wedding celebrations, a grand entrance by Cora's thoroughly modern mother, Martha Levinson (Shirley MacLaine), threatens to ruffle a few of the Dowager (Maggie Smith)'s feathers.

The entire fourth series of the award-winning ITV costume drama following the lives and loves of those above and below stairs in an English stately home. It's 1922, and six months after a tragic car accident, Lady Mary (Michelle Dockery) is still trying to come to terms with her loss. Meanwhile, as mass unemployment, political upheaval and economic crisis threaten the social order of the day, the family and staff of Downton Abbey try to adjust to life in a changing world.

All eight episodes from the second series of the award-winning ITV costume drama following the lives and loves of those above and below stairs in a stately home at the outbreak of World War One. While Matthew (Dan Stevens) and Thomas (Rob James-Collier) are off fighting at the Somme, both Lord Grantham (Hugh Bonneville) and William (Thomas Howes) feel frustrated at being barred from taking part in the fighting. Meanwhile, Lady Sybil (Jessica Brown Findlay) defies her aristocratic position and enlists in the Royal Army Nursing Corps, while Lady Mary (Michelle Dockery) puts on a brave face when Matthew arrives home on leave with his future wife Lavinia Swire (Zoe Boyle) in tow.

Behaviour describes animal and human behaviour, including environmental influence, behavioural development, courtship and social interaction. It covers all the material required for the study of behaviour at A-level, whilst at the same time providing an accessible and informative introduction to the fascinating science of behaviour. The authors provide a list of further reading for those who wish to learn more. The Advanced Biology Topics series of books will be of interest to students studying a wide variety of biological subjects at A-level, or as part of a vocational or undergraduate course.