Friday the 13th: The Series (1987)

Season 1: Episode 14

Jack and Ryan recover a cursed lantern from two treasure hunters who use it to recover lost treasure by killing their divers with it. They take it back to the vault and then head off for a convention. The two crooks follow them to the shop and try to recover the lantern from Micki and the neighbor boy that she is babysitting. Micki manages to kill the two, and when Jack and Ryan return and ask what she did, she nonchalantly replied, ""Not much.""