The Dragon's Garden: Weapons of the Fae Queen, Book 4 - Weapons of the Fae Queen, #4

A lost magic. An unusual gift. A lonely princess. Two precious artefacts have been stolen and it's now critical for the Weapons of the Fae Queen to discover if the third one remains safe, but they must do it without raising suspicions of anyone involved. Calliope comes up with a ludicrous plan on gaining access to the final artefact in what is considered the most dangerous place in the Enchanted Underworld, The Dragon's Garden.
It is definitely the boldest thing the team has ever considered, but they are getting desperate. As this mystery unravels it appears that the fate of more than the Enchanted Underworld is in danger. Chaos is sticking true to his chosen name and his goal will become clearer and more sinister as they race to stop him. A steamy PNR mystery series.