Storyville: Raising a School Shooter
22h, BBC Four
An intensely intimate and thought-provoking Storyville film, featuring the stories of three parents whose children all perpetrated high school shootings in the United States. Jeff Williams shares how his son Andy orchestrated a 2001 school shooting that killed two students and left 13 others injured – resulting in life imprisonment – while Sue Klebold’s son Dylan was one of the two teenagers behind the Columbine shooting in 1999. Ammar Kalia
17h, National Geographic
The inhabitants of the Southeast Alaska Wilderness continue their fight for survival among the elements of this documentary series. As temperatures continue to drop, David rushes to replenish his wood supply, while Gary asks for help rebuilding his greenhouse and Curly Leach cuts down on the mink population. AND
Location, location, location: 20 years and count
20h, Canal 4
Phil and Kirstie’s adorable retrospective focuses on real estate hunters looking for homes with character this week. Among the buyers returning for a catch-up are Colin and Robin, who entrusted the duo with the task of finding them a Victorian craze, and Pip, who sought out the rural dream. Hannah Verdier
DC’s Legends of Tomorrow
20h, Sky One
Season six of the lawless time-guarding eccentric series now has a vague structure: The Legends must neutralize the volatile aliens scattered throughout history. Spooner leads the gang in 1950s California, where a fast food concept created a food frenzy. Graeme Vertu
Hampton Court RHS Palace Gardens Festival
21h, BBC Two
Marking the return of visitors to the world’s largest annual flower show, held at Hampton Court, Joe Swift, Rachel of Thame, Adam Frost and Arit Anderson are leading the coverage of this year’s horticultural entries. In addition, there are community projects posted in the Allotments section. AND
24/7 victim: every second counts
9 p.m., channel 5
Returning, once again, to Barnsley A&E to remember the routine heroism of staff within the NHS. Tonight, a nasty dog bite, an injury to his bleeding profusely, and a 78-year-old cyclist who fell, but whose stoicism and good humor immediately charmed hospital staff. Phil Harrison
Choice of films
It follows (9 p.m., horror channel)
David Robert Mitchell’s relentlessly tense horror centers on a young woman (Maika Monroe) who, after a one night stand, is doomed to be pursued by a relentless creature that only she can see. It will kill her unless she can pass it on to someone else through consensual sex. Terrible. Simon Wardell
Tennis : Wimbledon 2021 1 p.m., BBC Two. Coverage of the men’s singles quarter-finals.
Rugby Federation: Sharks contre British & Irish Lions 6 p.m. Sky Sports Main Event. Second warm-up match.
Football: England v Denmark From 6.30 p.m. ITV. Coverage of the second semi-final from Wembley. Kick-off at 8 p.m.