#21 Unknown by Rachel Caine

[missingvolume]

The second book of the spinoff series from the Weather Warden series starts right almost at the end of the first one. Cassiel is working with Rocha to find his niece that has been taken by a rogue djinn bent on destroying everything and is using children with weather warden powers as her army. I do hope they will find an ally instead of always having someone stab them in the back.