Continuity mistake: Right at the beginning of the episode a Cadillac Escalade gets stolen. The car is the newest model. The chase begins and the car is a new model right up to a scene when they crash into some other cars. That part was filmed with older model Cadillac. The damage is quite severe, but the chase continues again with the new model that has only one bit of damage - a mirror that has come apart.
Natalie Luca (No. 184) - S4-E12
Continuity mistake: In the scene with Tom, Reddington, Dembe and Agnes; Dembe is playing with Agnes in her cot while Tom and Reddington talk. Dembe later picks up Agnes and puts her on his knee, only for her to return to her cot mere seconds later.
Continuity mistake: The time on Navabi's phone screen jumps from 6:06 to 6:08 in a matter of seconds when she's talking with Elise.
Continuity mistake: After the fight at the club, the amount of blood on Liz's chin increases after Emma points it out to her and Liz washes it off in the bathroom.
Continuity mistake: When Emma and Jessica are waiting for the other two, Emma is looking at herself in the broken side mirror, and Jessica is leaning on the hood next to her when the van pulls in. In the next shot, with the van still pulling in, Emma and Jessica are now standing in front of the Cadillac.
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