The canny man in the corner helps Polly when a gambler is accused of murder.
BBC Radio 7
An American heiress is blackmailed by her 'dead' husband. Stars Bernard Hepton.
Murder is afoot when a worried aunt tackles her nephew - a case for the man in the corner.
A dying businessman appears to have settled his will, but revenge wreaks family havoc.
A murder shatters Polly, as the old man's crime-solving efforts meet furious resistance.
A River Thames corpse sparks a complex mystery for the astute old teahouse customer.
A ragged old customer applies his uncanny deductive powers to a bookmaker's murder.
Polly seeks help from an enigmatic customer in a London teahouse over her friend's killing