Exit by Belinda Bauer

In this dark comic novel, widower Felix Pink is an "Exiteer." He, along with a partner, sits with someone who is terminally ill as the client takes their own life. It's all done within the law, but one day it goes horribly wrong as he and his colleague, Amanda, mistakenly aide the wrong person. Felix wonders what exactly went awry and if he'll be charged with murder. Exit recounts the tale of the police--specifically PC Calvin Bridge--unraveling the crime that was committed and arresting who's responsible. Felix, meanwhile, tries to make amends with the man mistakenly left alive. With its wide cast of characters and interesting puzzle, this book was a real treat.