Dragon Deception (Supernatural Consultant, #2)

A life full of children and mysteries to solve doesn't leave much time for relaxation or each other, something Lumie wants to help fix for Dane and Mercury by way of arranging a picnic. But good intentions and life rarely cooperate, and Dane knows it's only a matter of time before all hell breaks loose.

Hell turns out to be someone using Quicksilver's name to destroy buildings, but there's no way to tell whether the enemy is an impostor or a trap.  Hopefully it won't mean missing the picnic.