After four years, you think you know someone. But what if you woke up one day to discover that your best friend is an international con artist – and that she’s scammed you out of your life savings? That’s what happened to Johnathan Walton, and he’s been out to set the record straight and protect future victims of his one-time best friend, Marianne Smyth.

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When reality TV producer Johnathan Walton and his neighbors lose access to their resort-style swimming pool in their Downtown Los Angeles high-rise, they band together to push back against their landlord. At one of their protest parties, Johnathan meets Mair Smyth, a wealthy Irish heiress with a storied past who is battling some serious demons from her family back in Ireland. She dazzles the crowd, dropping in like an angel ready to solve everyone’s problems with the pool and beyond. But is Mair really the sweet savior she appears to be?

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Johnathan gets a panicked call from Mair...in jail. Her powerful Irish family set her up to make it look like she stole hundreds of thousands from her employer, all so they can torpedo her chances of getting her $25 million inheritance. Johnathan spends $70,000 trying to help Mair clear her name and help her get what’s rightfully hers. But one day he discovers "Mair Smyth" is not even her real name. And that's only the tip of the iceberg that forces Johnathan to question everything he thinks he knows about Mair Smyth.

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Johnathan discovers that his good will helping his best friend was actually a long con: Mair scammed him out of nearly $100,000. But his story is only the beginning of what’s shaping up to be a laundry list of cons, including credit card fraud, blackmail, and much more. When police refuse to take his case seriously, Jonathan takes to the internet, writing blog posts warning any future victims, including one in particular: a wealthy SoCal software engineer Mair is dating who has no idea what she has in store for him.

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Johnathan’s blog not only draws out more victims, it also stops one major crime before it happens. Mair comes very close to scamming a Newport Beach engineer into adding her name to the deeds of his two multi-million dollar homes—so that she can own half of them. But when the engineer’s ex-wife, herself a victim of Mair’s evil lies, finds Johnathan’s blog, the truth puts the kibosh on the con queen's plan just in the nick of time.

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Mair Smyth spectacularly scams a Los Angeles politician out of tens of thousands by impersonating his former mistress and making threats of taking their relationship public right before an election. Johnathan also learns that Mair’s been in the blackmail business for a while, conning men she meets on a “Sugar Daddy” dating site. As he uncovers each new head-spinning con, Johnathan wonders just how far down this rabbit hole goes.

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Johnathan discovers that Mair Smyth’s cons have gone international, and police from Northern Ireland are hot on her trail. Mair's daughter Chelsea speaks out for the first time about her experience being raised by a con artist and getting roped into helping her scam $500,000 from dozens of victims in Northern Ireland. Chelsea reveals not only that Mair was an unfit mother, but offers a stunning psychological portrait of a woman who uses and exploits family members without a shred of remorse.

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After doggedly pursuing law enforcement for years, Johnathan finally gets some relief. Mair Smyth is arrested in Los Angeles, but keeps herself busy awaiting trial. She uses a phony mental illness claim and a pair of crutches to trick a judge into going easy on her. But the folks she’s conned band together and are committed to fighting back. As Johnathan and his fellow victims put it all on the line to see her brought to justice, Mair’s next brazen scam could let her walk away scot-free.

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