Zero Days, the “unputdownable” (Crime Monthly) thriller by New York Times-bestselling author Ruth Ware, is available on a Kindle Daily Deal for only 99p. Grab your e-book here now before the deal ends.

Hired by companies to break into buildings and hack security systems, Jack and her husband, Gabe, are the best penetration specialists in the business. But after a routine assignment goes horribly wrong, Jack arrives home to find her husband dead. To add to her horror, the police are closing in on their suspect—her.

Suddenly on the run and quickly running out of options, Jack must decide who she can trust as she circles closer to the real killer in this unputdownable and heart-pounding mystery from an author whose “propulsive prose keeps readers on the hook and refuses to let anyone off until all has been revealed” (Shelf Awareness).

Zero Days is also out now in paperback. Grab your US copy here and your UK paperback here or, better, via your local bookshop or Bookshop.org.

Already read it? Ruth’s latest high-tension thriller, One Perfect Couple, is available here now in the US and here for UK pre-order.

Follow Ruth on Instagram @ruthwarewriter and Twitter @RuthWareWriter.