Fiona Addai is ready to set her plan in motion. To honor the anniversary of her brother’s death, she’s going to steal back his brilliant invention from the ruthless corporation that stole and claimed it as their own. As a famed Reddit detective known as @Princess_PI, Fiona has used her online connections and sleuthing skills to time every step down to the minute. But with one disastrous misstep, instead of getting justice, Fiona finds herself accused of murder.

Maurice Bennett is no stranger to insomnia. These days, he’s not losing sleep over the cases he’s solving—but running from the one he couldn’t. Instead, he’s been settling for small-time scandals that don’t stir up the guilt he’s buried. But when he spots Fiona Addai at the center of a murder investigation, something clicks. And for the first time in a long while, Maurice feels that old spark of intrigue.

However, Fiona is not the helpless damsel she appears to be. Sure, she needs Maurice’s help to clear her name, but she’s got conditions of her own: she wants a crash course in real-world detective work. Maurice isn’t exactly thrilled. With every late-night stakeout and tension-filled interrogation, their partnership, rife with tension and unexpected chemistry, unravels a dangerous web of corporate crime and familial secrets. To bring the real killer to light, they'll need to trust each other and that might be the most dangerous gamble of all.