Mercy's angel hunting days are behind her, but old wounds open thanks to problems caused by the father figures who raised her, and the chaotic, messy flings and crushes of her past that came later. Chief among them – Father Kael Donavon, the priest with a tortured past and an uncanny understanding of exorcisms, forged through his own childhood possession. Picking up directly after the plot-twisting events of of No More Angels Left to Fall, 'Daddy Issues' reminds Mercy that running from her past is not an option – she must confront it.
