Louise Williams is a single mom and hard-working entrepreneur. With her school-aged son and her interior design business, she doesn't have much time for anything else. So when a few stolen moments on social media turn her life into a nightmare, she's not sure who she can trust or where she can turn.

It started innocently enough. Maria Weston, a friend from high school, sent her a friend request on Facebook. The only problem with that? Maria Weston drowned when they were in high school.

Or did she?

Louise has spent the last 25 years riddled with guilt for what she and her friend did to Maria back then. Maria was a transfer student, the new kid in a school where Louise had just enough social capital to be near the popular group. And Louise was faced with the choice of keeping that capital and shunning Maria or of friending Maria and losing her chance at the popular crowd (and more importantly, at Sam). She chose popularity, and Maria paid the ultimate price.

And now she's back, and Louise has to figure out who is stalking her on Facebook. This, with an impending high school reunion, a challenging relationship with her ex-husband (also a former high school classmate), and visits to see old friends and places, and Louise realizes that to stop whoever is after her now, she'l have to go back and figure out what really happened that night so many years ago.

Friend Request is just as creepily amazing as it sounds, with lots of chills and tension that keep you reading straight through. Author Laura Marshall takes us on the ride of a lifetime, with alternating stories of the current time in Louise's life and flashbacks to high school. And the worst part of reading this? Knowing how stupid we all were in high school and realizing any one of these characters could be you.

For fans of grip lit, Friend Request is a must. Read. It. Now.

And be careful who you friend online.

Galleys for Friend Request were provided by Grand Central Publishing through NetGalley.com, with many thanks.