In celebration of its 50th anniversary, Saturday Night Theatre - the oldest title in broadcasting for a play series - presents a murder mystery, a form which has proved one of the most popular over the years.
Can death be brought about by remote control? Mark Easterbrooke discovers that witchcraft and black magic can induce a terrifying series of events.
With Geraldine Fitzgerald, Teresa Gallagher, Melinda Walker, Matthew Morgan, Melanie Hudson, Diana Payan, Philip Anthony, John Church, Sandra James-Young, Kate Binchy, Keith Drinkel and David Thorpe.
Dramatised by Michael Bakewell
Director Enyd Williams