Several other series have an episode 10 or near-10 with this title:
The title for Season 1, Episode 10 most likely refers to the Canadian mystery series Murdoch Mysteries . [S1E10] Child's Play
: Small footprints found at the scene lead Murdoch to suspect that a child, or several children, may be responsible for the crime. Several other series have an episode 10 or
: Season 1, Episode 10 (1987) follows Hildy taking in a young shoplifter. Child's Play - Murdoch Mysteries (Season 1, Episode 10) or several children
: Season 1, Episode 10 (though some listings rank it differently) involves toys that turn children into mindless drones.