Produced at KSVR Studios at the radio station KSVR-FM in Mount Vernon, Washington. The actors are from the Skagit Radio Repertory Company. The producer is Joseph C McGuire. Written by Avery Hopwood and Mary Roberts Rhinehart and adapted for radio by Heather Elliott. Rhinehart was one of the authors of the cozy school of mysteries starting in the early 20th century. Before she wrote cozies she wrote mystery melodramas like the Circular Staircase and The Bat. The Bat features an old Dark house with a mysterious villain on the loose known as the Bat. Solving the problem of the Bat is a Spinster and her niece and host of quirky characters. Produced by Joseph C McGuire. Edited by Jay Charles. Performers: The Skagit Radio Repertory Company. Made with a grant from the Corporation For Public Broadcasting.