Diamonds and Thieves

Diamonds and Thieves is the third episode of the eleventh season of Doctor Who. It is the first full story to feature Renee Jeanet as a companion, as well as the first appearance of recurring enemy Wishburn Aleven and the 61st Assembly.

Synopsis
Renee needs the Doctor's help. She owes 62nd century satellite trillionaire Wishburn Aleven a lot of money, but she has found a way to get out of the binding contract. Aleven holds in possession a very rare diamond, and Renee wants to steal it to break her debt.