The Underneath Novels Series by Barbara Tatum

Eight months after the death of her husband, Cori Ward is finally starting to feel like she's got her life under control. Then she wakes one night to a bloodcurdling scream, and runs into her son's room to discover horrors she had never imagined. Soon Cori discovers that Phinn was not the man she thought he was. Even worse, Phinn carried the truth about Cori and their kids to the grave with him, leaving her racing to find out what is coming after Gus, and why... moreEight months after the death of her husband, Cori Ward is finally starting to feel like she's got her life under control. Then she wakes one night to a bloodcurdling scream, and runs into her son's room to discover horrors she had never imagined. Soon Cori discovers that Phinn was not the man she thought he was. Even worse, Phinn carried the truth about Cori and their kids to the grave with him, leaving her racing to find out what is coming after Gus, and why. With the help of her super-smart daughter, Lilly, and her impetuous son, Gus, Cori tries to tackle a world of fantasy. She finds herself caught beTween two men, beTwist two worlds, and perhaps twisted into the most dangerous person in the Underneath. less