I'm really enjoying "Hostages", new this season in the States (currently 3 episodes in). It's been panned by critics, but, suspending belief sometimes, it's great escape tv!
Basically, top DC surgeon is about to do surgery on the President, but the day before her entire family is taken hostage by a group led by an FBI agent. They want her to kill the President or else....and lots high up are involved. And every person, family and kidnappers have dirty secrets slowly coming out.
Great fun!