Where do I start the Chasing Past side quest? (possible spoilers)

[Dal]

Hi.
I need the Chasing Past side quest to finish 2 acheivements, but I cannot start it.
I have done the Lost in Space quest, but there is no Tariq at the safe house. There was a woman, though (the one that stands outside sweeping) I could talk to, and I asked "Where did you find him?" She answers something, and then nothing.
So what can I do?

Thanks.

[petri.piira]

Tariq (or whoever it is) should be just inside the safe house, with a kid. If not, that might be a bug, then?

[(+[Coffee]+)]

Chasing Past is available during or after the main quest: The Museum.

[petri.piira]

True. You need to start the Museum. It is good to go to the side quest before entering the museum.

[Dal]

Ah, I understand.
Thanks for clarifying.