pf2e.fyi
From Pathfinder Secrets of Magic, which isn't enabled.

Shadow Step

ACTION
SHADOWTELEPORTATION
Activity 1 action
Requirements The familiar is in dim light or darkness.
Effect The familiar teleports itself up to 30 feet. The destination must be in dim light or darkness and must be within your familiar's line of sight and line of effect.

This action has the trait matching your tradition of magic, or occult if you aren't a spellcaster.

Pathfinder Secrets of MagicOGL