Totally Killer (2023) Timeline Explained – Every Event in Order

Doug Summers was the original Sweet 16 Killer who murdered three girls in 1987. He sought revenge for the death of his girlfriend Trish, whose demise was connected to Pam. This revenge motive explains his brutal killing spree targeting teenage girls on their 16th birthdays, each stabbed exactly 16 times.

Foreshadowing: Doug's role as principal in the present day and his willingness to help Jamie initially hides his true identity as the killer.

• doug summers
• sweet 16 killer
• trish
• revenge
• murderer reveal

Chris Dubasage, who assists Amelia in the present timeline, was manipulating the situation for his podcast ambitions. He deceived everyone and worked alongside the killer, using the time travel events and murders as content for his show. This betrayal is revealed during the climax when Jamie confronts him in the time machine.

Foreshadowing: Chris's willingness to help with the time machine retrofitting masks his ulterior motives throughout the story.

• chris dubasage
• podcast
• betrayal
• manipulation

Despite Jamie's efforts to intervene at Tiffany's party, Heather becomes the latest victim. This tragic outcome demonstrates the fragility of time and destiny in the movie, Jamie's actions in the past don't guarantee preventing the murders, showing that altering history is unpredictable and dangerous.

Foreshadowing: Earlier timeline events show the murders continue regardless of Jamie's attempts to change them.

• heather hernandez
• failed rescue
• tiffany party
• time travel consequences

Pam was targeted because she was friends with the original victims, Tiffany, Marisa, and Heather. The killer's note reading 'You're next, one day' was directly aimed at Pam, connecting her past to the present-day murders. This explains why Pam was killed at the start of the movie.

Foreshadowing: The sinister note Jamie discovers hidden by her mother reveals the killer's connection to Pam.

• pam hughes
• killer note
• friendship
• targeted

When Jamie returns to the present after altering the timeline, time has been rewritten in her favor. Pam now lives, and Jamie discovers she now has an older brother, meaning her original identity has been completely changed. Her actions in 1987 created a ripple effect that rewrote her entire personal history.

Foreshadowing: The movie's time travel mechanic shows that changes in 1987 directly rewrite the 2023 timeline.

• colette
• older brother
• timeline rewrite
• identity change
• present day twist

Jamie and Amelia built a time machine that allows travel between 2023 and 1987. The mechanics involve Lauren's construction of a new time machine at the amusement park, and Chris helping retrofit the original machine. Traveling to the past allows Jamie to interact with events, but the timeline rewrites based on her actions, creating new realities upon her return.

Foreshadowing: The dual timeline structure requires the audience to track cause and effect across two eras.

• time machine
• 1987
• time travel
• timeline
• mechanics

Trish was Doug Summers' girlfriend whose death was linked to Pam and her friends. This tragedy drove Doug to become the Sweet 16 Killer, targeting the girls he blamed for Trish's demise. His revenge motive stems from this personal loss, making him a killer driven by grief and anger.

Foreshadowing: Doug's revelation as the killer comes with the backstory of his relationship with Trish.

• trish
• doug summers
• girlfriend
• revenge
• motive

The three teenage girls, Tiffany Clark, Marisa Song, and Heather Hernandez, were each murdered on their 16th birthdays, stabbed exactly 16 times. They were targeted by Doug Summers as part of his revenge campaign, believing they were responsible for his girlfriend Trish's death.

Foreshadowing: The 1987 murders are revealed as the catalyst for the entire story's events.

• tiffany clark
• marisa song
• heather hernandez
• 1987 murders
• 16th birthday

Lauren Creston, Amelia's mother, assists Jamie because she wants to help prevent the tragic murders. After learning about Jamie's mission to save Pam and her friends, Lauren helps construct a new time machine at the amusement park and supports the plan to lure the killer into the haunted house confrontation.

Foreshadowing: Lauren's involvement provides crucial support for Jamie's time travel mission.

• lauren creston
• amusement park
• time machine
• support

Sheriff Kara Lim played a crucial role in confronting the Sweet 16 Killer at the amusement park's haunted house. During the group's plan to lure the killer into a trap, Sheriff Lim impaled the attacker with a scythe, stopping the killer's reign of terror.

Foreshadowing: The haunted house confrontation was set up as a trap to catch the killer.

• sheriff kara lim
• haunted house
• scythe
• catch killer

The sinister note Pam had hidden from the killer read, 'You're next, one day.' This chilling message revealed that Pam was aware of the killer's threat against her, likely due to her connection to the 1987 victims. Jamie discovers this note after Pam's death, sparking her determination to travel back in time.

Foreshadowing: The hidden note serves as the direct motivation for Jamie's time travel mission.

• note
• you're next one day
• hidden message
• threat

Amelia Creston, Jamie's best friend, helped build and operate the time machine because she wanted to help Jamie save her mother. Despite the risks involved with time travel, Amelia supported Jamie throughout the mission and assisted from the present timeline by retrofitting the machine with Chris's help.

Foreshadowing: Amelia's friendship with Jamie drives her willingness to risk everything to help save Pam.

• amelia creston
• best friend
• support
• time machine assistance