A British couple are shocked out of their suburban malaise when British intelligence agent Stewart shows up at their door and wants to use their house for a stakeout. Stewart reveals that their neighbors are undercover Russian KGB spies, part of a Soviet espionage network.
| Actor | Role |
|---|---|
 Ellen BurstynBarbara Jackson | Barbara Jackson |
 Teri GarrHelen Schaefer | Helen Schaefer |
 Sammi DavisJulie Jackson | Julie Jackson |
 Clive SwiftEllis | Ellis |
 Daniel BenzaliPeter Schafer | Peter Schafer |
 Alan BatesStewart | Stewart |
| PPeter SchofieldPowell | Powell |
| DDavid CortiMalcolm | Malcolm |
 Margot LeicesterThelma | Thelma |
 Jackie DowneySally | Sally |
| PPeter HughesClub Manager | Club Manager |
 Bruce MorrisonClub Waiter | Club Waiter |
 Tim BarkerTelephone Man | Telephone Man |
 Alan RenwickVegetable Truck Man | Vegetable Truck Man |
| TTerry JohnPolice Gas Man | Police Gas Man |
 Ronald HinesBob Jackson | Bob Jackson |