Gagnon's new novel is Scenes of the Crime.
At CrimeReads she tagged five psychological thrillers in which "best friends" are the biggest threat, including:
You’re Invited – Amanda JayatissaRead about the other entries on the list.
When you learn that your glamorous childhood best friend is hosting a lavish wedding in your mutual hometown in Sri Lanka, there’s really only one thing you can do: fly halfway around the world to try to stop the marriage from happening.
At least that’s Amaya’s plan; things quickly spin out of control once she arrives in Colombo, intent on keeping her friend Kaavi from walking down the aisle with her ex, Spencer. From that delightfully messy start, things only get more complicated. No one seems to have actually invited Amaya, for one thing. When the bride goes missing on her wedding day, Kaavi’s presumed-jealous ex-bestie is the prime suspect… but as this twisty narrative unfolds, it becomes clear that anyone could be behind the disappearance.
With a fabulously luxurious setting, class tension, an insightful exploration of the cultural tug-of-war between Sri Lankan tradition and modern western life, and a huge dose of the quicksilver ‘reality’ that appears on social media, this book is both thoughtful and bingeable.
--Marshal Zeringue