In A Good Girl’s Guide to Murder, Becca Bell, played by Carla Woodcock, is opposed to Pip investigating her sister’s death, fearing that her own secrets will come out.
Becca’s sister, Andie Bell, disappeared five years ago. Andie’s boyfriend confessed to her murder before killing himself.
Andie’s body was never found, and like the rest of her family, Becca endured the pain of losing Andie. Becca and her parents are still mourning her loss.
As Pip had promised her mother not to bother Andie or Sal’s families, she never questions Becca, the last person to see Andie alive, about Andie’s murder.
When Becca finds out about Pip investigating her sister’s murder case, she makes her disapproval known, but Pip does not give up on the case.
What Pip does not realize is that Becca’s reasons for opposing her investigation go beyond Pip causing her family pain by reminding them of Andie’s death.
A sister’s betrayal
When Becca and Andie were in high school, Andie went to a lot of parties. Becca, who wanted to be like her sister, followed in her footsteps.
Their father, Jason, tried to keep them away from those parties by being stern with them, but despite his efforts, the sisters often rebelled against him.
One day, Becca went to a rave party, where she was drugged. She was sexually assaulted in her unconscious state, so she did not remember the details of the incident the next day.
She later realized that her abuser was Max Hastings. Becca confided in her sister about the assault and asked her to go to the police with her to report the crime.
It was then that Andie revealed to Becca that she was the one who sold Max the drug he used on Becca. Andie refused to go to the police with Becca, as she would have been charged with dealing drugs.
On top of that, Andie told Becca that she was running away from home the next day, which made Becca feel like Andie was abandoning her.
Angry and upset, Becca pushed Andie, who was already injured. Andie hit her head and died right in front of Becca’s eyes.
Becca then took Andie’s car, drove her body to the woods, disposed of it in a well, and lied to the police about the last time she saw Andie alive.
Becca’s attempts to keep the truth hidden
Becca manages to get away with murdering Andie for five years, as everyone believes Sal is guilty of the crime.
Then, Pip starts investigating and uncovering secrets linked to the case, which makes Becca anxious, resulting in her sending anonymous threatening messages to Pip.
As the threats become increasingly frightening, Pip decides to get the person threatening her to reveal themselves by posting a video on social media, promising that she will soon be revealing her findings online.
Becca does not take the bait. Instead, she steals Pip’s dog, Barney, from her house, preventing Pip from posting anything online.
Despite Pip indicating that she will not pursue the case, Becca kills Barney. Becca believes that she has once again gotten away with her crime when Elliot is accused of killing both Andie and Sal.
However, Pip soon realizes that Elliot could not have killed Barney and continues investigating the case until she figures out Becca’s involvement in Andie’s death.
When Pip confronts her, Becca offers to take her to Andie’s body, and Pip accepts, unaware that Becca has drugged her and intends to kill her.
Becca tries to commit another murder to hide the last one, but she fails; Ravi and Cara come to Pip’s rescue with the police. With Becca’s arrest, the truth about Andie’s murder finally comes out.
Also Read: A Good Girl’s Guide to Murder summary and ending explained
