Agrega una trama en tu idiomaDon Corey and Jed Sills operate Checkmate, Inc., a very high-priced detective agency in San Francisco. Helping them protect the lives of their clients is British criminologist (once an Oxfor... Leer todoDon Corey and Jed Sills operate Checkmate, Inc., a very high-priced detective agency in San Francisco. Helping them protect the lives of their clients is British criminologist (once an Oxford professor) Carl Hyatt.Don Corey and Jed Sills operate Checkmate, Inc., a very high-priced detective agency in San Francisco. Helping them protect the lives of their clients is British criminologist (once an Oxford professor) Carl Hyatt.