The Cruise, Sailing the Caribbean is on ITV at 8.30pm.

This three-part series follows life on board the Royal Princess, during a busy season of island-hopping around the Caribbean.

The Investigator, A British Crime Story is on ITV at 9pm.

Three-part documentary in which journalist and former detective Mark Williams-Thomas looks into several cases of missing women, aiming to link them to two men serving time for murder.

Not Going Out is on BBC1 at 9pm.

Lee and Lucy become addicted to a TV series, causing them to cancel dinner with Toby and Anna at the last minute.

Big Cats About the House is on BBC Two at 8pm.

Conclusion of the documentary set in a big-cat sanctuary in Kent. Maya the jaguar is now 10 weeks old, and is starting to push the family to their limits.

Golf, the Masters is on Sky Sports Main Event at 7pm.

Coverage of the opening round from Augusta National in Georgia.

The Good Fight is on More 4 at 9pm.

Liz represents her son’s favourite teacher, after she senses that the school fired him for unlawful reasons.

The Big Bang Theory is on E4 at 8pm.

Leonard, Howard and Raj discover that Penny is having a business meeting with tech entrepreneur Bill Gates.