Relics: a Novel of the Keepers (PsiFinder1‪)‬

Psyonic searching—that's easy.
Psyonic Finding—that's a lot harder.

When Christina Amies taught herself Psionics, she thought she was unique.
Then she began searching for kidnap victim Professor George Huttmacher. Soon, she ran into clues that could only be left by another Psionic.

She hadn't expected that.

But what she REALLY hadn't expected was a whole secret group of Psionics who wanted their hands on the same thing she was looking for.

Then she actually met one—and the showdown began. . . .
Christina’s specialty is Finding things and people gone missing. With her college friend, Bill Lemly, she founded A&L Locating Service, which has developed a growing reputation for near miraculous results.
Now, Christina faces her most challenging case. First, she Finds an abducted Professor, tracking him half-way across the country and assisting the FBI in a dangerous raid. He is no sooner home, though, than the Professor enlists Christina to find an “Artifact of Fabulous Power,” a relic which may have huge impacts on the world as she knows it.
Meanwhile, unknown to either of them, a secretive and ancient group of Psionics claims that relic as their own and will go to whatever lengths are needed to return it to their Keeping. Christina will go from believing she is the world’s only Psionic to realizing she is only one of many—and that she has much to learn, if she hopes to stay alive.