A/N: This one is a little disjointed but pretend that Ianto and Jack are talking as they follow Merlin who is looking for the TARDIS. Hope this clears things up.
DISCLAIMER: This again? (I don't own Merlin, Torchwood or Doctor Who)
"Since when does the Doctor have a son?" Ianto asked Jack as they walked. Merlin running ahead.
"He didn't the last time. Maybe he made him."
"Can he do that?"
"I wouldn't have thought it before but now I'm starting to believe it." Jack gestured to the dark-haired little boy. "Where else did he come from?"
"He doesn't really look like him, though. Perhaps he's adopted." Ianto suggested.
"Or he's started taking younger companions on. Got tired of the old ones," Jack mused, making a face. "I'm not old, am I?"
"Of course not, sir."