Revealing mistake: When Elise calls Navabi's phone, the phone is not in call mode.
The Architect (No. 107) - S4-E14
Revealing mistake: Aram Mojtabai fires a high-caliber weapon, destroying a vehicle with it. But after the weapon is fired, the projectile is still in it. Instead, the weapon's lower jaw has disappeared. (00:34:35)
Answer: The man Red killed, Sam Scott, was Lizzie's adoptive father, not her biological one. However, at that time Lizzie (and thus the audience), was led to believe her real father abandoned her and her mother, so expect more secrets to be revealed how her real father actually died (or if he's even actually dead).
Bishop73