Jack's illness has caused him to hallucinate about a cure among other things. As a result, Sydney must recreate the time when Jack was working for the CIA and hid the only man who might be able to help him now. For this, Sydney must role play her own mother. Meanwhile, Sophia moves in with Sydney and Nadia. Written by
Did You Know?
became the sixth actress to portray Irina Derevko/ Laura Bristow. Largely associated with Lena Olin
who was a season regular in Season 2, the character had been portrayed by different actresses before Olin was cast and, later, after she was unavailable to resume the part. See more
In the 4th season episode "Mirage", Sydney is surprised to learn that Jack revealed his CIA affiliation to Irina/Laura. She already knew Jack had told, as he advised her of it in the 1st season episode "Parity". See more
Ah, thank you! Marshall, remind me to kiss you.
[He gets a huge grin
What... What did she say?
Uhh... Uhh... nothin'.