The Charmer (1987)
The Charmer was a 1987 British television serial set in the 1930s, and starring Nigel Havers as Ralph Ernest Gorse, a seducing conman and murderer, Rosemary Leach as Joan Plumleigh-Bruce, the smitten victim widow and Bernard Hepton as Donald Stimpson, Plumleigh-Bruce's would-be beau, who vengefully