The first of a three-parter that investigates the missing British photojournalist. Plus, acerbic sitcom We Might Regret This. Here’s what to watch this evening The first of a three-parter that investigates the missing British photojournalist. Plus, acerbic sitcom We Might Regret This. Here’s what to watch this evening 9pm, BBC Two What really happened to John Cantlie? This three-part documentary builds on the acclaimed Last Man Standing podcast to investigate the British photojournalist who “