Dark Heart is on ITV at 9pm.

This new six-part crime drama follows the work of a detective, and his team, as they investigate a series of horrifying crimes. Continues tomorrow at 9pm.

The Apprentice is on BBC One at 9pm.

The candidates are challenged to create and market a brand-new shoe, along with putting together a launch event in order to sell their product to industry representatives.

The Secret Life of the Zoo is on Channel Four at 8pm.

Return of the series following life at Chester Zoo. The keepers believe a pregnant elephant may be three months overdue.

Ben Hanlin, Drowned is on ITV Two at 9pm.

A Halloween-themed event in which magician Ben Hanlin, alongside Joey Essex, performs a dangerous escapology stunt.

Football Chelsea versus Derby County is on Sky SPorts Main Event at 7pm.

Coverage of tonight’s Carabao Cup fourth-round match, held at Stamford Bridge. Kick-off is at seven forty-five.

Ray Donovan is on Sky Atlantic at 9pm.

The US drama returns for its sixth series. Ray tries to build a new life in New York.