Hard Town by Adam Plantinga (Author)

After surviving a deadly prison break, ex-Detroit cop Kurt Argento is ready for some quiet. Still working through his grief over the passing of his wife, Argento finds himself house-sitting for a friend with his loyal companion, Hudson, a Chow Chow-Shepard mix. It's a simple life, picking up odd jobs here and there, but it's one that Argento is content to live. Then Kristin Reed shows up with her young son, Ethan, and begs Argento to help find her missing husband.