Tonight’s TV: A poignant film about the Dunblane massacre 30 years on | television

Dunblane Bars

9pm on Channel 4
March marks the 30th anniversary of the murders of 16 children and one teacher at Dunblane Primary School. This poignant documentary explores the day and its aftermath, when parents campaigned for a ban on handguns for private use in the UK. It’s a positive ending, but the horror is inevitable and it’s clear that many are still traumatized. “These children were given to my care, and I did not protect them,” says deputy headteacher Fiona Edington. Phil Harrison

Dragon’s lair

8pm, BBC One
Beauty mogul Jenna Meek returns as Dragon in an episode that begins with a coffin carried into the den: An entrepreneur wants to stop traditional dating apps. There are subsequent steps to combine the canopy and the tent, and solve the problem of waste caused by broken headphones. Jack Seale

This is agricultural life

8pm on BBC Two
With the return of BBC Scotland’s gentle rural documentary series, we meet Lucy and Adam, who need a £4 million mortgage to move their English operation north of the border. At the other end of the spectrum are Emma and Rob, who balance side jobs with money-making plans to maintain their farm in the Highlands. Hannah J. Davis

Murder Case: The Hunt for Arlene Fraser’s Killer

9pm on BBC Two
This two-part documentary explores one of Scotland’s strangest missing persons investigations, hearing from Arlene Fraser’s sister and the officers in the case. Arlene disappeared in 1998. Since then, police have investigated her marriage, followed doomed leads, used unusual methods, and discovered nothing. Phil Harrison

Gold hunting in remote areas

9pm, U&Y

In the fourth day of the real-life adventure series, Brendan encounters a spider so huge and hairy that it would send most people screaming back to civilization. But not these guys. Brendan and his friend Jeff continue their quest to find Harold Lassiter’s legendary lost gold. Ellen E. Jones

Murder at the Knife Edge: True Crime Presentations

9pm on ITV1
After breaking up with his girlfriend of 18 years, father-of-three Wayne Coventry met Cordelia Farrell. A toxic relationship ensued and in 2019 Farrell killed her partner. It’s the first case in the second series of the true crime show, with Farrell’s brother and father contributing and experts examining the details. Human resources