Ellery Queen and the Murder Ring (1941)

SEE THE ACE AMATUER SLEUTH OF RADIO AND FICTION SOLVE THE STRANGE SLAYING OF WALL STREET'S RICHEST WIDOW!

Ralph Bellamy made his fourth and final appearance as literary sleuth Ellery Queen in Columbia's Ellery Queen and the Murder Ring. On this occasion, Ellery and his police-inspector father are summoned to a private hospital by its owner, philanthropist Mrs. Stack. There've been some very weird goings-on at the hospital as of late, and Mrs. Stack wants to get to the bottom of things.