What to Watch...

Where to get your Detective fix on the small screen this week…

Broadchurch Series 3 Episode 2

Monday 9pm ITV

Shockwaves reverberate through the seaside town as news of the attack spreads. Starring David Tennant and Olivia Colman.

The Replacement Episode 2

Tuesday 9pm BBC1

Ellen finds evidence that her boss was having an affair, but her only lead is Paula's 10 year-old daughter Caris, and a former colleague, the mysterious Georgia, neither of who want to speak to her. Ian asks her to stop pushing, as her fixation is taking priority over Lia, her newborn baby. When Paula discovers Ellen's investigation, she engineers a humiliating situation with a client and a warning visit from social services. Drama, starring Morven Christie, Vicky McClure, Richard Rankin and Dougray Scott.

Agatha Christie's Marple S5-E2 The Secret of Chimneys

Friday 9pm ITV3

Lady Virginia Revel receives a marriage proposal from an ambitious politician, but is reluctant to accept it, especially as she is also being courted by a dashing young suitor. Accompanied by Miss Marple, she travels to a weekend party at her family home Chimneys, hoping to reach a decision. Negotiations for the sale of the country house are taking place during the gathering, but when new owner Count Ludwig of Austria is found murdered, St Mary Mead's elderly spinster must identify the culprit. Whodunit, starring Julia McKenzie, with a supporting cast including Gavin & Stacey stars Ruth Jones and Mathew Horne, plus Dervla Kirwan, Charlotte Salt, Michelle Collins, Jonas Armstrong and Edward Fox.