COUPLES RETREAT 10.45pm, ITV

A couple on the brink of divorce sign up for relationship therapy on a tropical island, but find they can save money if they persuade their friends to join them. Three more couples go along for the holiday, thinking they do not need any help – but the unconventional treatment soon exposes cracks in their relationships. Comedy, starring Vince Vaughn, Malin Akerman, Jon Favreau, Kristin Davis, Jason Bateman, Kristen Bell, Jean Reno and Faizon Love.