Susannah, a young widow and single mother, has remarried well: to Max, a charismatic artist and popular speaker whose career took her and her fifteen-year-old son out of New York City and to a quiet Vermont university town. Strong-willed and attractive, Susannah expects that her life is perfectly in place again. Then one quiet morning she finds a note on her door: I KNOW WHO YOU ARE.

Max dismisses the note as a prank. But days after a neighbourhood couple comes to dinner, the husband mysteriously dies in a tragic accident while on a run with Max. Soon thereafter, a second note appears on their door: DID YOU GET AWAY WITH IT?

Both Susannah and Max are keeping secrets from the world and from each other - secrets that could destroy their family and everything they have built. The Perfect Liar is a thrilling novel told through the alternating perspectives of Susannah and Max with a shocking climax that no one will expect.