A Touch of Frost S08 E02 Benefit of the Doubt (2)

With the railroad murder solved, Frost tries to come to terms with having an previously unknown daughter. Detective Reid is sent to look for contraband cigarettes, but is found nearly dead on a public toilet. Was he high, or did Frost´s lookalike have anything to do with it? Meanwhile, Frost eliminates suspect after suspect in the surgeon murder, and ends up saving several lives.