The Grey Wolves Series
The Gypsy Healer Series
Canon

The Grey Wolves Series (GWS) and The Gypsy Healer Series (GHS) exist in the same universe with GHS being the spin-off. They have the same characters and cross over many times. Below is the order the books can be read to have the events and timelines flow together; find the chronological reading order on each of their pages.

GWS: Book 1, Prince of Wolves (PW)
GWS: Book 2, Blood Rites (BR)
GWS: Book 3, Just One Drop (JOD)
GWS: Book 4, Out of the Dark (OD)
GWS: Book 5, Beyond the Veil (BV)
GWS: Book 6, Fate and Fury (FF)
GWS: Book 7, Sacrifice of Love (SL)
GWS: Novella 4, Sacred Silence (SS)
GWS: Novella 2, Resounding Silence (RC)
GWS: Book 8, Luna Mine (LM)
GHS: Book 1, Into the Fae (IF)
GHS: Book 2, Wolf of Stone (WS)
GWS: Novella 1, Piercing Silence (PS)
GHS: Book 3, Jewel of Darkness (JD)
GWS: Book 9, Den of Sorrows (DS)
GWS: Book 10, The Burning Claw (BC)
GHS: Book 4, Wolves of Wrath (WW)
GWS: Novella 3, Forgotten Silence (FS)
GWS: Book 11, Tears of the Moon (TM)
GHS: Book 5, Wolf of Sight] (WOS)