The Poisoned Pen

CBS Radio Mystery Theater "The Poisoned Pen" is a Mystery from Tuesday, July 22, 1975.

Playwright Joseph Carroway, nightclub owner Frank Clancy and Sebastian Proudfoot, aide to theatrical agent Barney Hogarth, die within seconds after sealing a self-addressed envelope, the anonymous sender of which has offered each $50,000 for past courtesies. Autopsies reveal that each has died from a poison called urcurare. The police learn that each had dealt with a young, beautiful woman named Selina, who had come to New York hoping to make it big in show business.