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 is murdered after disembarking the train, Williams vows to pursue the case himself.
Prof. Luke Williams
Lavinia Fullerton
Bridget Conway
Honoria Waynflete
Maj. Horton
Dr. Thomas
Const. Reed
Jimmy Lorrimer
Mr. Ellsworthy
Vicar
Rivers
Abbot
Lord Gordon Easterfield
Mrs. Pierce
Rose Humbleby
Avery
Attendant
