Egyptian billionaire Mohamed Al Fayed – former owner of one of the most famous shops in the world – is accused of rape and attempted rape by women who worked for him. For the full investigation, search for World of Secrets wherever you get your BBC podcasts.

This is a story of power and control at the very top of British society. At the time of many of the alleged attacks, Mohamed Al Fayed was the owner of London’s luxury department store Harrods, and also the iconic Ritz Paris hotel and English football club Fulham FC.

The BBC heard testimony of over 20 women.

Harrods has condemned Al Fayed’s actions “in the strongest terms” and has told the BBC that “as a business we failed our employees who were his victims and for this we sincerely apologise.” Harrods says the organisation is different today to the one owned by Al Fayed, and it “seeks to put the welfare of our employees at the heart of everything we do.”

“Are you a North Korean hacker? Yes, I am.” Investigators say money from the Lazarus Group’s hacks is flowing into Kim Jong-un’s nuclear weapons programme. Can it be stopped?

From millions to billions: the Lazarus Group get into cryptocurrency. North Korea tries to infiltrate companies from the inside, posing as job seekers. “We had a North Korean on our payroll”. Can investigators stop them cashing out their digital loot? #LazarusHeist

It’s North Korea’s first crypto conference. Eight international tech experts decide to go but someone is watching. Their every move in Pyongyang is followed and they soon regret the trip. “I was put in handcuffs and taken to an interrogation centre.”

“He wrote me beautiful letters!” A “bromance” begins between President Trump and Kim Jong-un but how long will it last? The US president’s former security advisor, Ambassador John Bolton, reveals what happens inside the summit room when the two leaders meet face to face. Plus, the Olympic Destroyer hackers are finally unmasked – but who are they?

Hackers attack the Winter Olympics, during the opening ceremony in South Korea. Who is responsible? Fingers point to North Korea but it has joined forces with its neighbour and even sent a team. Why would they want to sabotage it? What’s going on?

"Something was collapsing inside me.” A top North Korean diplomat questions his commitment to the regime. And an adventure ends in tragedy for the American student, Otto Warmbier. We hear from the doctor who joined the mission to bring him home from Pyongyang.

A social media influencer is laundering cash for the hackers. Hushpuppi has expensive tastes and a luxury lifestyle. His paymasters? The dark web fraudster, Big Boss and the Lazarus Group cyber criminals, with alleged links to North Korea. Law enforcement is closing in.

The hackers turn to the dark web and enlist an eager new recruit. “Big Boss” is key to the ATM heist but who is he? Meanwhile, the police in India continue to investigate and make arrests.

Millions of dollars are stolen from ATMs at the same time in 28 countries. An army of money mules stuff the cash into bags. Do they know who they are really working for? In just over two hours, the thieves take nearly $14 million - all from the accounts of Cosmos Bank in India. The hackers are back!