The Deeps (Book Three of The Liminality‪)‬

James Moody, deported from the UK back to the US, strives to keep his promise to dead girlfriend Karla and rescue her from the frigid antechamber of Hell called The Deeps. Meanwhile, Frelsian assassin Wendell Franks employs coercion to recruit him as an apprentice, threatening to eliminate those he cares for one by one unless he complies.