When Slim goes to see the solicitor, he remarks, "Pardon my French, but I hope you derived some enjoyment from it because you have truly messed yourself up." His lips actually form the word 'fucked' instead of 'screwed'.
Slim severed the telephone lines using wire cutters, a fact that would have been uncovered during a police inquiry.
Slim's weight varies between different scenes. This is particularly apparent when Slim and Gracie initially reach their rented house. Slim appears quite slender. However, in the following scene, when Gracie remarks that she is not particularly slim, she noticeably appears heavier.
Following the final confrontation with Mitch, Slim is undeniably bleeding from her right ear and chin; however, when the authorities arrive, there is no trace of blood on her head.
The day following Mitch's punch to Slim's face, she visits the diner to speak with Ginny. Her eye is evidently bruised and considerably swollen. However, during dinner that evening with Mitch, her black eye is nearly faded away.
Whilst Slim, Gracie, and Joe are travelling in Joe's convertible, the headrests in the front seats are absent. However, when the vehicle is later displayed in the garage, the headrests are present.
At his wedding, Mitch places the envelope in his waistcoat two times.
When Slim hands back the page from Mitch's lover, Darcelle, there is a close-up of Slim dialling the number on her mobile phone. The mobile phone differs from the one she was using in both earlier and later scenes.
When Mitch departs from his residence after Slim has arrived, he raises the cover of the security system keypad to input his code. Upon his return, he inputs his code without raising the cover.
During the final confrontation, when Mitch has Slim backed against the wall, his hands change positions between different angles of the scene.
When Slim and Mitch are in the house during the climactic confrontation, the finger that Mitch uses to gesture changes position between shots.
The subtitle indicates that Slim is on a boat in Northern Michigan, yet it is evident that she is actually in Puget Sound; Mount Rainier can be seen in the background.
When Slim first dials 33, she reaches Darcelle; on her second attempt, she speaks to her husband. Notably, during her initial call to 33, she uses Mitch's phone. Conversely, when she dials 33 to contact Mitch, it is from her own phone.
When Slim's companions force their way through the glass-panelled door, the glass has a jagged edge that strikes the elbow of the diner proprietor, but he remains unharmed.
When Slim enters to eliminate Michael, she adorns her fingers with substantial rings and wraps her hands, fashioning them into knuckle-dusters. However, upon the police's arrival, she has removed all of them. Michael's injuries will not align with her account, indicating that she utilised a "weapon" during the altercation and that it was planned in advance. It’s highly probable that she will face a conviction for murder.
Throughout their relationship, Mitch has unreservedly and fearlessly assaulted Slim multiple times, both with and without weapons. During their ultimate confrontation, Mitch breaks into his flat and discovers Slim is present. Even though he believes he still has access to a firearm, he picks up the phone and calls 999.
In a marriage that spanned five years, there is no clarification on how Mitch, a temperamental and domineering person, managed to keep his calm for as long as he did, nor is there any indication that Slim failed to notice any warning signs or dubious conduct from him over that period.
Even with his networks and resources, it's quite unlikely that Mitch would be able to locate Slim within such a brief time period, or that he would possess personal information, like Ginny using her card for Slim at the hotel, and somehow manage to find this out in such a short span of time.
When Slim enters the flat, she neglects to reset the alarm system, and it remains silent.
When Slim activates the device to disable the mobile network, the phone displays "Signal faded - Call lost", yet the service bars indicate that the phone is fully connected.
During her preparations for the confrontation with Mitch, Slim opens the telephone kiosk and then proceeds to sever the wires. The wires were dangling beneath the kiosk, rendering the need to open it unnecessary.
When Slim and Gracie board the bus to flee from Mitch, the final scene of them as the bus departs clearly reveals that "Gracie" is merely a doll. One can observe her rigid plastic hands resting on Slim's shoulders.
When Slim initially begins to battle Mitch at his marina residence, she strikes him multiple times. However, his face remains completely unmarked after each hit.
