Ianto jumps slightly as a voice addresses him from out of the fog beyond. Biting back the instinctive urge to reach for his stun gun. It's not that he doesn't trust people, but he has a hard time trusting people, all things considered. Taking a deep breath to try and keep himself calm, he steps forward towards where the voice has called out to him.

"Who's there?" he asks as he walks. Hoping that keeping the conversation going will make him feel a little calmer about the situation. Make his pulse stop racing and stop himself from feeling like there are monsters out there waiting to attack him from every shadow.