Dark Corridors - The Dark Journeys Trilogy, #2

Harper Paget destroyed some of the deadly creatures menacing areas of Atlanta in DARK NEIGHBORHOODS, the dimension-traveling entities known as the Lamiae in ancient Greece and the Kuntilanak in Indonesia. However, he lost some loved ones in the US and China. In DARK CORRIDORS, Harper travels to Indonesia and then to China where he works, for a short time, for a university connected to his university back home.
When he loses that position because a violent attack involving him in a Chinese surgical operating room, he transfers to a Chinese university located iin a somewhat rural area and moves into a campus hotel that, because of him, becomes haunted by the mind-twisting, memory occupying ancient creatures. His French friend, Pierre, offers sage advice and support in the war against the Kunti (as Pierre calls them).
Geraldine, Harper's wily girlfriend, is thrown back through a dimensional vortex, time-tunneling back to Warrick, Harper's hometown in Illinois, in the past at the time when Harper is a high school student. Pierre is visited by a young lady from Warrick who has inadvertently traveled through the same Kunti-generated vortex that swallowed Geraldine by trading places with her. When Pierre and his girlfriend Christabel and her roommate visit Harper in the haunted hotel, Christabel's mind is manipulated by the Kunti, and she sees a California beach where she encounters an incarnation of Harper's witch ancestor.
She also see Warrick in the past when Geraldine is trapped there. As in DARK NEIGHBORHOODS, Harper and his friends must traverse the multi-dimensional, multi-national terrain in their battle with the deadly Kunti/Lamiae who are intent upon occupying a planet that the humans have not taken care of. The problem for us is that we don't know if all of the characters -- even including Harper -- are who they appear to be at all times.
Nowhere are we  safe .