In short: Dark Inside by Jeyn Roberts is an intense post-apocalyptic read, but unfortunately lacks distinct character development for its four narrators. 
 An ancient evil threatens to destroy the world. Countless people are turned into mindless killers and brutally murder the leftover good people one by one. Dark Inside follows four survivors - Mason, Aries, Clementine, and Michael - in their quest to stay alive, find their families, and fight their darkness. Needless to say, Dark Inside is a pretty intense read. It was very fast paced with lots of action and lots of close-calls. Unfortunately though, it just didn't work for me. 
 My main problem with Dark Inside was there were too many perspectives to keep track of. The four main characters had different backgrounds but ultimately did not have as fully fleshed out personalities as I would have liked, making them difficult separate and difficult to relate to. Also, it did not make for a fun reading experience to have each character's chapter end on a cliffhanger only to return to them finally three chapters later. And often the promised action at the end of the chapter was completely skipped over by the time that character's story was returned to, making the experience even more frustrating. 
 If there was one interesting aspect that having four perspectives provided though, it's the differing outlooks and actions taken by each character and using this to evaluate what would be the best course of action for me should I ever find myself in a post-apocalyptic setting. You never know. It could happen. What's best: not risking it and staying hidden in a secret hideout or not being a sitting duck and never staying in the same place for more than a night? Grouping together with many people to have safety in numbers or going it alone so that it's not as easy to be tracked? These are important questions that we should ask ourselves in case the world ends tomorrow. 
 Overall, I can appreciate the intense plot and psychological undercurrents that debut author, Jeyn Roberts, created for Dark Inside. But ultimately, Dark Inside needed more in depth character and world building to keep me interested. I'm confused as to whether this one is a planned series or a standalone, but there were certainly a ton of unanswered questions leftover.