Maids, The Mentalist & Midsomer Murder: The Best of Tonight’s TV

From a secret shopper to the mentalist, there's plenty to watch tonight! Devious Maids – RTÉ 2 (8.00pm) In tonight’s episode Marisol persuades Nicholas to get rid of Opal, Reggie gets jealous and Carmen tries to let Ty down gently. Mary Portas: Secret Shopper – Channel 4 (8.00pm) Retail guru Mary Portas is working with a family-run department store that has been losing customers due to the financial situation. Midsomer Murders – UTV Ireland (8.00pm) Barnaby and Jones get to work when Bentham DeQuetteville falls to his death after allegedly seeing a headless horseman. Critical – Sky 1 (9.00pm) This week on the medical drama, Consultant Glen Boyle has to help a woman with a fence post impaled through her face and Fiona is struggling to work with her ex.   The Mentalist – RTÉ One (10.15pm) Jane is worried about Lisbon’s safety when the team is tasked with protecting a witness in a murder investigation. Starring Simon Baker and Robin Tunney.