This part made me laugh. It's from part 3:
Remember how I mentioned that Madison helped Ethan escape from the police? What I didn't mention is that this assistance required no particular cleverness on her part, but depended entirely on the police being incredibly bad at their jobs.
Permit me to set the scene: The cops have located Ethan's car outside of the Doc's apartment building. They assume, correctly, that this means that Ethan is currently inside the apartment building. Then Madison comes driving up on her motorcycle, and the cops let her enter the apartment. Why do they do this? Because "maybe she lives there". So, just to be clear—you guys believe a monstrous serial killer is holed up inside that fire-ravaged, uninhabitable building. Then a woman shows up, intent on entering it. There are two possibilities for why she might want to this:
1. She is in cahoots with the serial killer.
2. She's an innocent bystander, which means she's about to become a hostage.
In which of those situations would it be prudent to NOT detain her?
But that idiocy pales next to how Madison and Ethan get away from the cops. Despite the fact that they are theoretically highly-trained and experienced investigators, neither bad cop, Druggy the FBI agent, nor any of the dozen other cops on the scene are familiar with the concept that buildings can have more than one entrance. Nope, they all sit outside the front door, completely ignoring both the rear of the building and the alley running along one side. Guess how our heroes make their getaway?