“Extortion” (**1/2 out of four) was a compelling thriller about an American tourist (Eion Bailey) on vacation with his family in the Caribbean. When they become stranded on an island, he finds himself at the mercy of a cold-blooded fisherman (Barkhad Abdi) who aims to extort and kill them. Tense and nerve-jangling thriller is efficient and well-acted but loses its way towards the end, and starts to become overly ridiculous. Danny Glover is solid as usual as a detective on the case and Abdi is strong in playing virtually the same role he played in “Captain Phillips”.