The Bletchley Circle San Francisco (ITV, 9pm)

As New Order sang so memorably in their 1990 World Cup anthem World in Motion, "When something's good it's never gone."

That certainly seems to be the case with The Bletchley Circle.

ITV launched the first series in 2012 with a cast led by Anna Maxwell Martin, Rachael Stirling, Sophie Rundle and Julie Graham. They played women who met during the Second World War when they worked as codebreakers at Bletchley Park, deciphering messages from the Nazis.

Seven years after the end of the conflict, they were all bored with their ordinary, domestic lives and looking for a challenge - which came in the form of several suspicious deaths that one of the gang believes are linked and are the work of a serial killer.

Maxwell Martin quit before series two, which involved the remaining members trying to clear the name of another former comrade as she awaits trial for the murder of an old flame.

That run ended in 2014 and ITV decided not to recommission the period drama for a third run, despite the fact that it helped boost the presence of women on screen by having four female leads.

Four years on, the show is back - but not quite the same as it was before. It's been snapped up by the US streaming service BritBox, who have produced a new version that sees two members of the original team - those played by Stirling and Graham - transported to San Francisco.

"In 2018, BritBox will up the ante with our first commission, more co-productions and more popular programming and star power from all genres appealing to new subscribers along with our very loyal existing members," said the company's president Soumya Sriraman when the show was announced, before adding: "With this new continuation, we have the chance to build on its amazing legacy and give its loyal fans an exciting new chapter."

The Bletchley Circle isn't the first show to receive a new lease of life thanks to an online firm - the same thing happened to Ripper Street when the BBC axed it, only for Amazon Prime to give it a new lease of life.

When we meet up with Jean and Millie again it's 1956. Jean uncovers evidence that suggests the killer who murdered a Bletchley girl during the war may be up to his old tricks in the city by the Bay. They set sail for America in the hope of teaming up with one of their US counterparts who was employed at the famous Presidio.

Using a scrap of wartime code, they locate the woman in question, Iris, a musician and maths genius who, along with her engineering protege Hailey, agrees to lend a hand.

Their investigation takes them deep into the heart of the Fillmore District and closer than ever before to a killer who doesn't just take the lives of his victims, he mutilates them too.

Iris struggles to cope with the pressure - can she hold it together long enough to make sure justice is done?

Shipwreck Psycho (Yesterday, 7pm)

In 1629, the Dutch ship Batavia was wrecked off the coast of Western Australia, leaving 360 crew and passengers stranded. Yet the greatest danger wasn't from the elements - it was from apothecary Jeronimus Cornelius. He'd already been plotting a mutiny before the ship was lost and established a cult-like rule over the island, where violence, anarchy and hedonism prevailed. Over the course of three months, 120 men, women and children were brutally slaughtered in what seems like a real-life Lord of the Flies. A team of forensic scientists sets out to find out what really happened on the island and asks if Cornelius would now be called a psychopath.

Live Well For Longer (C4, 8pm)

Presenters Kate Quilton and Tamal Ray, along with roving reporter Morland Sanders, continue their trawl through various topics in a bid to make us all healthier and happier. Once upon a time, the word 'stress' was never mentioned; these days, it's everywhere with the vast majority of us claiming to either be suffering from it or to have dealt with it at some point in our lives. The hosts reveal ways in which viewers can prove whether they're suffering from it before turning their attention to relieving the condition, including - believe it or not - singing. This week's big experiment looks at food that may be able to bring down blood pressure and sees Professor Adrian Brady from the University of Glasgow put porridge oats, beetroot and coconut water to the test.

Animals Behaving Badly (BBC1, 8pm)

In the second episode, Liz Bonnin meets the animals doing whatever it takes to find food, joining experts to uncover the science behind their ingenious tactics and some of their unusual behaviour. Liz sees macaques using psychology to pull off a theft, tigers deceiving their prey, a wedge-billed hummingbird stealing nectar from under the beaks of its rivals, a spider conning prey with a chemical disguise, and coconut crabs who seem intent on a stealing spree.