The Voice UK (STV, 8pm)
THE singing competition has changed presenters, coaching line-ups and even channels, but it’s kept those infamous spinning chairs — and with good reason. For many viewers, the most interesting stage of the contest is the early blind auditions, when the coaches keep their backs to the would-be pop stars so they can’t be swayed by the performer’s image, only turning around if they like what they hear. But who will be good enough to get, Jennifer Hudson, Olly Murs and Tom Jones spinning around this week? And which of the coaches will prove most persuasive when it comes to getting the performers to join their team?

Spiral (BBC Four, 9pm)
AS the Paris-set drama continues, a teenage girl’s body is discovered, and Laure is convinced there is a link to the Mercier murder. But can she find proof? Meanwhile, Tintin’s misbehaving son becomes a cause for concern, and Josephine cracks ahead of a crucial court appearance in the sexual harassment case. Then, in the second episode of the double-bill, the detectives continue their mission to track down the murdered teenager’s best friend, and Roban and Laure discover evidence of police corruption.

Hard Sun (BBC One, 9.35pm)
RENKO persuades young journalist Will Benedetti to stir up trouble by posting a story about the “Hard Sun” conspiracy, and immediately finds herself in the crosshairs of Security Services agent Grace Morrigan. As the truth is made public, a surgical strike from the government manages to diffuse the situation, transforming what should be a panic-inducing revelation into a laughable hoax. However, the dossier remains unaccounted for, meaning Grace’s search is not over. Meanwhile, Hicks races to catch a murderer obsessed with the impending end-of-days, and over at the facility, Daniel receives an unexpected visitor. Sci-fi thriller, starring Agyness Deyn, Jim Sturgess and Nikki Amuka-Bird.