White House Farm (STV, 9pm)

STAN and his number two Mick Clark speak to Jeremy and relatives of the murdered family, but their picture of what really happened at White House Farm remains inconclusive. The twins’ father Colin Caffell is devastated by his loss, and is initially comforted by Jeremy, while post-mortem examinations reveal nothing to contradict the murder-suicide theory. Meanwhile, relative Ann Eaton cannot believe Sheila was responsible, and discusses her growing suspicions with her brother David Boutflour.

Trust Me, I’m a Doctor (BBC2, 8pm)

CAN’T remember where you’ve put your keys or the name of your next-door neighbour? Then maybe you had too much to eat at lunchtime. That seems to be the suggestion Michael Mosley is making in the latest edition of the health series. There is, apparently, a theory that eating less can boost the memory, and he’s going to put it to the test, using a team of people as guinea pigs. Those suffering from stress may be interested in hearing what Alain Gregoire has to say about the body’s built-in reliever, while Zoe Williams has tips on spotting a mystery illness that can cause stillbirth.

Lose Weight and Get Fit with Tom Kerridge (BBC2, 8.30pm)

IT’S the first full week of the challenge and Tom is back in Gloucester, the city where he grew up, to exercise and cook alongside his diet and fitness gang. As team chef, he wants to get them off to a good start on calorie counting – and familiar, comforting dishes are the way to go.

Good Omens (BBC2, 9pm)

IT’S taken a while for this adaptation of Neil Gaiman and Terry Pratchett’s much-loved novel to reach the BBC, but if the reviews are anything to go by, it’s well worth the wait. The fantasy comedy-adventure became available to stream via Amazon Prime last year, but now those of us without a subscription are also getting a chance to see it. David Tennant and Michael Sheen head the all-star cast as a demon and an angel respectively.