Saved By a Stranger
9pm, BBC Two
Anita Rani presents this new series telling the stories of people who were caught up in momentous events of recent history and whose lives were changed by an act of humanity from a stranger at the time. In tonight’s opening episode we meet Karl, who was a passenger on the Piccadilly Line train targeted by terrorists during the 7/7 attacks on London. Moments after the bomb exploded, he was comforted by a woman who held his hand in the darkness, and now he goes in search of her. Ammar Kalia
Dragons’ Den
8pm, BBC One
“You’ve invented a dumbbell for guinea pigs?” Colour the Dragons curious, if not quite ready to invest. It’s the usual mixture of the sublime and the ridiculous as the hardy business series rumbles on. Look out for innovative gym wear and a surprise appearance from Britpop also-rans Northern Uproar. Phil Harrison
The Dog House
8pm, Channel 4
More doggy first dates with prospective owners at Wood Green animal charity shelter. Olympic cyclist Victoria Pendleton brings celebrity to the shelter while looking for a dog to co-own with her mother, while couple Shai and Orin might have found the object of their affections in Polo the lurcher. AK
This Is My House
9pm, BBC One
The Richard Bacon-created, Stacey Dooley-fronted gameshow has been an unexpected hit. Who would have thought that a reverse-Through the Keyhole with a touch of Would I Lie to You? could be so mesmerising? In this final episode, four contestants claim to be Erica, an artist and owner of a south London abode. Hannah J Davies
The Rookie
9pm, Sky Witness
The police drama begins its third season, following John Nolan (Nathan Fillion) as the oldest rookie in the LAPD. We open on the continuing fallout of the discovery that Armstrong (Harold Perrineau) is corrupt. Armstrong tries to implicate Nolan and then hunts him down to silence him for good. AK
Frank of Ireland
10pm, Channel 4
The continuing pratfalls of Frank and Doofus, AKA co-creators and real-life brothers Brian and Domhnall Gleeson. Tonight, Frank’s mum, Mary, takes on a tenant to cover the mortgage, while the best pals attempt to expose Aine’s posh boyfriend Peter-Brian – until Frank ends up falling under his spell. Ali Catterall
Film choice
127 Hours (Danny Boyle, 2010) 1.30am, Film4
The grisly true story of Aron Ralston, the young US hiker whose arm became trapped between a boulder and the rocky face of a crevice in the wilderness, seems all but unfilmable. Yet Danny Boyle skilfully illuminates Ralston’s inner mental struggle, while James Franco plays the part with utter conviction. Paul Howlett
Today’s sport
Golf: The Tenerife Open Day one of the European Tour event from Golf Costa Adeje. 1.30pm, Sky Sports Golf
Rugby league: Wigan Warriors v Hull FC Super League fifth-round match at DW Stadium. 7pm, Sky Sports Main Event
Uefa Europa League A semi-final match featuring Manchester United or Arsenal. 7.30pm, BT Sport 2
