***SPOILERS*** Last act was slapped together and cheap

This movie needed 45 minutes longer to flesh out the con. It's called "The Samaritan", which is a con involving 2 perps an 1 mark. Basically, one of the perps mugs the mark, the other perp captures/takes down the robber (who gets away), and the mark rewards the perp out of gratitude. In this movie, the con is some convoluted version of the Samaritan, if it is at all. There certainly no "reward" out of gratitude. In the movie, I guess Ethan (Luke Kirby) is the Samaritan, since he brings back the "mugger", Iris (Ruth Negga),who stole from Xavier. How she stole $25K from him is not very well explained. From what I can tell, Foley (Jackson)is a legit real estate developer who is supposed to pay Xavier back for his daughter's indiscretions,
and Xavier, once he realizes Foley has an offshore account with clean money, gets greedy and makes a deal to launder $8 million for him for a 10% fee. As we see, the con fails because Iris blows the cover, leading to a very messy ending.
However, the entire con job has so many problems, I don't know where to begin.
For example, Foley was approached as being essential for the con, and was given lots of money and preparation to play the part of a wealthy legit father, but
Ethan endangers the con by bringing in Iris and tells Foley he can leave and they can do the con without him. How? They need a father with the money, the IT-fixed fake offshore account, and the motive to save his daughter. Secondly, Foley walks into the scenario where his daughter has already been beaten up, and instead of freaking out and pleading for the bad men not to hurt her, and he'll give them anything they want--he proceeds to SCOLD his daughter, while she's being held at gunpoint? I thought Foley was supposed to play the part of a legit rich father?
What father acts like that? Why did Foley spend a week at a fancy hotel if the mark wasn’t going to meet him there? And Foley was right there at the beginning when Xavier killed that man with a bottle; if Xavier or one of his bodyguards saw him, his cover would have been blown. Wasn’t it really stupid of Ethan to bring his prize con man into the same kitchen as his main mark? What did Ethan have on Helena, and how could Ethan change the con so quickly, telling Xavier that the daughter, not the wife, was the thief? Everything came together too quickly, too staged, with way too many loose ends. And what is Xavier doing driving around with $8million cash?
The entire first 2/3 of the movie worked well, including Foley’s growing love for Iris, and even the sickening reveal that she was his daughter, and that this fact was leverage for Ethan to get Foley in on the con. But the con part was slapped together, it seemed, to keep the film limited to 90 minutes, and it was entirely unconvincing. Xavier’s (Wilkinson) character was barely described; we only see him as some sort of mob boss/sommelier who does his own dirty work at the start of the movie. We don’t know his racket, or his real relationship with Ethan, or how Ethan explained the con to him. That would have been helpful, so we could see a real professional con working. Ethan was also stupid to jeopardize the entire con by goading Foley, who was already aboard, in kissing his daughter. Why did Xavier think Foley had a money-laundering operation? Why would he trust him in some slapped-together hostage situation? Why would Foley risk taking his dying daughter to the veterinarian con, instead of a proper hospital? If Foley only cared about his daughter’s life, he would have gotten her proper care, even if he were sent back to prison.
A relatively decent neo-noir thriller completely ruined by a sloppy, stagey, and unconvincing last act.