The final problem

The Holmes team (meaning Sherlock, Mycroft and John) decides to confront Eurus -the little sister, once for all. The youngest Holmes is supposed to be safely jailed on a secret fortress island. But it soon appears that Eurus is a master of manipulation, and that she has planned this meeting long ago...

The lying detective

John blames Sherlock for Mary's death and refuses to see him. Lost without his friend, Sherlock becomes paranoid and declares that Culverton Smith, a powerful magnate, is a serial killer. Why ? Because he met his daughter, who claims the Smith Company created a drug that can erase a short period of memories, and that her father confessed his crimes before having her taking this drug. Are Sherlock and the young woman both storytellers ?

The 6 Thatchers

Mr Welsborough is having a party for his 50th birthday. He is happy to receive a phone call from his son, travelling in Tibet. But the call is interrupted. One week later, after a car crash, the body of his son is found right in front of the house.

Sent by the police, Sherlock solves the mystery right away. He is more intrigued by the disappearance, in the house, of a bust of Margaret Thatcher. In this strange theft, he sees a hint of what is really obsessing him: Moriarty's inheritance.

But the trail may lead to a troubling discovery about Mary's past.