Marcella is on ITV at 9pm.

The detectives are shocked to discover the horrifying scale of the killer’s crimes, while Reg decides to come clean to the police.

24 Hours in Police Custody is on Channel 4 at 9pm.

Police officers search for a couple they believe have exploited a vulnerable woman by taking over her flat, and using it as a drugs den.

Electric Dreams is on Channel 4 at 10pm.

Last in the sci-fi drama series. A presidential candidate makes a statement that appears to encourage violence.

The Funeral Murders is on BBC Two at 9pm.

This documentary examines the deadly series of events connecting two funerals in Belfast in March 1988, at the height of the Troubles.

Imagine is on BBC One at 10.45pm.

Composer Andrew Lloyd Webber talks about his candid and confessional autobiography.

Neighbours is on Five Star at 6pm.

After Clint’s assets are suddenly frozen, Izzy pins all her hopes on a pregnancy test.

Wish I Was Here is on Film4 at 11.15pm.

Kate Hudson and Zach Braff star in this comedy drama about an out-of-work actor struggling to cope with life’s challenges