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Is there a better start to a story than cold-blooded murder? A Good Girl’s Guide to Murder fans don’t think so, which is what has helped the original book reach bestseller status and the series to become one of the most anticipated shows coming to Netflix this summer. However, if you’re looking to find out who really killed Andie Bell in A Good Girl’s Guide to Murder, here is everything you need to know about the ending of the series.

Obviously, we’ll be looking at some pretty big spoilers for A Good Girl’s Guide to Murder here, so proceed with caution.

A Good Girl’s Guide to Murder ending explained

As the final episode of A Good Girl’s Guide to Murder wraps up, we finally learn the truth about who killed Andie Bell. Episode five ends with Pip receiving a call from the Secret Older Guy at the heart of the mystery. The call turned out to be from her best friend Naomi, who was using her father Elliot’s old phone. After confronting Elliot, Pip discovers that he had been having an affair with Andie before she began dating Sal.

When Andie blackmailed Elliot, the two got into a physical confrontation. He pushed her and she got a concussion from falling on a nearby countertop. That isn’t what killed her, though. The same evening that Andie and Elliot had their confrontation, Andie told her sister Becca she was leaving town and leaving her to deal with their abusive father. This news, combined with Andie selling the drugs that Max used to rape her, caused Becca to push her sister. A second head injury resulted and finally spelled the end of Andie Bell.

Who killed Sal in A Good Girl’s Guide to Murder?

That was only half the tragedy that started A Good Girl’s Guide to Murder’s story. Sal Singh, Andie’s boyfriend, killed himself shortly after and was assumed to be the killer. However, Elliot found out that Andie had gone missing and panicked, assuming that he was the one who killed her. He framed Sal and killed him to clear his name.

Who was the woman in Elliot’s attic in A Good Girl’s Guide to Murder?

The last twist to Pip’s investigation was when she raced into the attic at Elliot’s secret house and found a young woman chained and bound. It wasn’t Andie, as Pip had hoped. Instead, it was a woman named Isla, who had been rough sleeping when Elliot spotted her and offered her a place to stay. After drinking too much and confessing to Sal’s murder, Elliot traps Isla in the house and locks her in the attic to keep her safe.

For years, Elliot fed Isla and kept her alive but confined to the attic until Pip found her and set her free. Elliot is definitely one of the worst people in this story, but the original book somehow made him even worse. In that version, Isla was a young woman with learning disabilities that looked like Andie, so Elliot kidnapped her and locked her in his secret attic. This went on for so long that Isla believed she was Andie by the time she was rescued. 

Will there be A Good Girl’s Guide to Murder season two?

There are three more books in Holly Jackson’s debut series, but that doesn’t mean that we’re getting more of Pip’s adventures in crime-solving just yet. Jackson said that there was the possibility for more seasons of the show, but, as she said during the A Good Girl’s Guide to Murder panel at MCM London, that depends on how the show is received by fans. If the ratings are good on Netflix and the BBC, we could see Emma Myers back on our screens again eventually.

The other star of Netflix's hit series Wednesday, Emma Myers, is stepping out on her own with the BBC/Netflix adaptation of a Good Girl's Guide to Murder. Read on for details about the show's cast, release date, and a play-by-play of the show's official panel from London's MCM Comic Con, and coming soon you can watch the full panel for free.