Requiem, BBC 1, 9pm
A BADLY injured Sean makes it to Dean House to advise Matilda that she is in mortal danger, though the accomplished musician becomes increasingly worried about Davey’s safety with neither of his parents around to protect him, so ignores the warning. Trudy pines after Hal and rues her harsh parting words, while Graves grows suspicious of Kendrick and starts to wonder whether Matilda has been telling the truth all along.

Lip Sync Battle UK: Robert Webb vs Sally Phillips, Channel 5, 10.30pm
A NEW series of the miming contest begins with what should be a closely fought contest between actors and comedians Robert Webb and Sally Phillips. Peep Show star Webb showed he had a knack for recreating iconic routines when he won Let’s Dance for Comic Relief in 2009 with a joyful take on Flashdance, while Miranda actress Phillips showed her resourcefulness and willingness to go the extra mile on the most recent series of Taskmaster. Here, hosts Mel B and Professor Green invite them to go head-to-head in lip syncing to songs of their choice. For their first track, they’ll be keeping it relatively simple and performing in their “civvies”. But for the second track they’ll be going all out.

Lethal Weapon, STV, 9pm
WITH Christmas approaching, the Murtaugh family heads to Hawaii for a welcome break. However, Murtaugh’s vacation is put on hold when he and Riggs are called to a homicide only to find the victim is an old friend – Diego, whom it had been hoped was keeping himself out of trouble. Meanwhile, Riggs gets a surprise phone call from a close relative just in time for the festivities.

Rough Justice, More4, 9pm
THE Flemish crime drama continues as the bruised body of Viviane Chen is found in a stable at a stud farm. At first it appears that she’s the victim of a tragic accident, but when the team’s investigation leads them to an inner-city Chinese restaurant with a side line in dealing herbal remedies, it begins to look as if Viviane’s death could have been a crime of passion. Meanwhile, Liese is receiving emails from beyond the grave – which are now starting to give her instructions.