The Professionals· Season 4 · Episode 1
The Acorn Syndrome
The daughter of a British Government engineer who is working on a defence protect is kidnapped, and the only way she will be safely returned is if he agrees to betray secrets to enemy agents.
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Guest stars
Michael Craigas Guthrie
Ronald Hinesas Copeland
Lynda La Planteas Viv Copeland
Ian Redfordas Lucas
Alun Lewisas McCabeOona Kirschas Sandy CopelandKate Dorningas NancyJohn Michael McCarthyas Insp. GraingerNigel Humphreysas JoeStewart Harwoodas Sam
Gennie Nevinsonas Eva
Sean Chapmanas ColemanAlan Igbonas Angadi
Christopher Saulas Male Hostage
