Venom (1981)

Venom (1981) is a cross between a kidnapping thriller and a monster-on-the-loose nail-biter, somehow effectively combining both into one plot. A nanny plots the kidnapping of her employer's 10-year-old with the help of a criminal mastermind, but the little boy has just accidentally brought home a deadly Black Mamba snake from the pet store instead the docile one he intended to buy. The police are dispatched when the store realizes the mistake, and they intercept the criminals, who are stuck inside the house with the boy and the snake. Will they make it out alive? Any of them? There is only one way to find out, but we will say this much: Susan George takes the time to strip off her clothes to her underwear and stockings!