Following a brutal attack, Kate Priddy makes the uncharacteristically bold decision of moving from London to Boston - in an apartment swap with her cousin, Corbin Dell.

But soon after her arrival Kate makes a shocking discovery: Corbins next-door neighbour, Audrey Marshall, may have been murdered.

Far from home and emotionally unstable, her imagination playing out her every fear, who can Kate trust?

As tantalizing as Rear Window, Gone Girl, The Girl on the Train and The Tale