Is it worse to be locked out? Or locked in? ––––––––––––––––––––––––––For four years, Natalie has believed in her boyfriend Noah's apocalyptic vision, locked away in his homemade bunker with six others. But when one of their own is brutally murdered, the walls become a prison of paranoia.As loyalties fracture and secrets unravel, Natalie must decide: is the real threat inside or outside? With Noah's grip on power slipping, she faces a chilling truth—he may not be the only monster lurking in the shadows. Can she escape before the next murder strikes? This suspenseful and perfectly plotted locked-room thriller is ideal for fans of Erin Kelly and Elin Hilderbrand. Available to pre-order now!