Tim Powers 
Medusa’s Web 

In the wake of their Aunt Amity's suicide, Scott and Madeline Madden are summoned to Caveat, the eerie, decaying mansion in the Hollywood hills in which they were raised. But their decadent and reclusive cousins, the malicious wheelchair-bound Claimayne and his sister, Ariel, do not welcome Scott and Madeline's return to the childhood home they once shared. While Scott desperately wants to go back to their shabby south of Sunset lives, he cannot pry his sister away from this old house that is a conduit for the supernatural.
Decorated by bits salvaged from old hotels and movie sets, Caveat hides a dark family secret that stretches back to the golden days of Rudolph Valentino and the silent film stars. A collection of hypnotic abstract images inked on paper allows the Maddens to briefly fragment and flatten time – to transport themselves into the past and future in visions that are both puzzling and terrifying.
As Madeline falls more completely under Caveat's spell, Scott must fight to protect her. But will he unravel the mystery of the Madden family's past and finally free them. . . or be pulled deeper into their deadly web?

About the author

Tim Powers is the author of several acclaimed works of speculative fiction. His books have won both the World Fantasy and the Philip K. Dick Memorial Awards, twice. He has received the Locus Award three times. He lives in San Bernardino, California.