DOCTOR: Where were we? We need as much intel as we can get. If we're going to protect Rosa, we need to know the facts of her life. Home address, daily routine, where she works, the routes she takes, and the church she attends. Also, the name of the driver she refused.

GRAHAM: I know that. It's James Blake.

RYAN: How do you know that?

GRAHAM: Well, your Nan, when she found out I was a bus driver, said to me, you'd better not be like James Blake. Blake the snake, that's what she called him. And I had to ask her who he was and she just said he gave all bus drivers a bad name.

YASMIN: She said that when you'd only just met?

GRAHAM: Yeah.