Two other Ilona Andrews books are also £0.99 each at Kindle UK right now, probably as part of the monthly sale, but no promises...
Sweep of the Heart - #5 and most recent in the Innkeepers series
Kindle UK:
https://www.amazon.co.uk/dp/B0BG92Z2G2
Blood Heir, #1 in the Julie/Kate Daniels spin-off series
Kindle UK:
https://www.amazon.co.uk/dp/B08D2215RG