Diana Goodman

While working in a diamond mine located in the desert, Bo and Ingrid, two siblings who survived a massacre as children, make a surprising discovery.

American computer whiz Luke Williams meets elderly Lavinia Fullerton on a London-bound train. She reveals she's discovered the identity of a serial killer in her village and is going to report it to Scotland Yard. When she's murdered after disembarking the train. Williams vows to pursue the case himself