Flowers from the Grave [Inspector Jane Doe Series #1]

The first in the Inspector Jane Doe adult mystery/paranormal series. Inspector Jane Doe, head of Melbourne Homicide is staying in an isolated cliff top cottage. She's recovering from near fatal head injuries received from a serial killer. Ryan O'Byrne a stranger on the beach befriends her. Jane's idyllic sojourn turns into a nightmare. Who is sending her flowers with threatening notes attached? Is Ryan truly a ghost? Can she trust Ryan as a friend or is he in fact the serial killer, and she his next victim?