The Dead in the Tower Part Two: Trapped in a Building and Surrounded by the Undead

Trapped in a building and surrounded by a city filling with hungry cannibals. A small group struggles to stay alive. At the start of the nightshift, 49 people started a typical Monday. But soon they realized they were in the middle of a war zone.
The infection spread through the city faster than anyone would have anticipated trapping the survivors. There numbers fell from forty-nine down to five in few short weeks and now this small group was forced to leave the safety of the building and fight their way out the city.