From speed, to history and explosive goings-on down at the cop shop.
Journey to Le Mans, 8pm, ITV4 What must it be like to compete at the world's most gruelling race? Worse, what must it be like if you're a small team without much funding? This documentary aims to find out, following tiny British team Jota Sport at the 2014 race.
The team finished fifth overall, which is an astonishing achievement for such a small outfit. Find out how they did it.
Castles – Britain's Fortified History, 9pm, BBC Four In this new series, historian and archaeologist Sam Willis explores the history of this most imposing of structures.
We get the lowdown on how William the Conquerer transported his across the Channel, as well as see how a weapon smith tempered the steel of a sword's blade.
Throughout the series, Willis will explore the role the castle played in Britain's history, as well as its wider cultural significance in art and literature.
Babylon, 10pm, Channel 4 Last week was an explosive episode, in more ways than one, and this week sees PR supremo Liz (Brit Marling) struggle to put a positive spin on events.
Finn (Bertie Carvel) takes advantage of the situation and tries to elbow her out of the way, while Sharon (Nicola Walker) tries to track down the bomber.
For the most part, it's more drama than comedy drama, but it does have its funny moments.