Gabriel, Michael, and the Brotherhood of Archangels must try to deal with relationships while fulfilling duties of fighting demons and protecting humans in the Archangel Chronicles. Gabriel and Michael have been pining after each other for centuries, but an egomaniacal human trying to raise a hell army pushes their relationship to the backburner in No Quarter. Gabriel and Michael are finally reunited in No Surrender, No Retreat, but their happiness is threatened when someone begins kidnapping angels and selling them on the black market. In No Shadows Fall, newly bonded Gabriel and Michael and torn from their idyllic island retreat when Gabriel’s ancient enemy Semjaza escapes from his prison.