Toni Dwiggins

DEEP BENEATH THE STREETS OF SAN FRANCISCO, a murder victim is dumped at an archaeological dig. A note pinned to his shirt warns we will bury you.The question is, who is you?Desperate to learn what happened--and what might happen next--investigators...

"A MUST READ for anyone wanting a mystery layered with suspicion, sibling rivalry, family dysfunction, murder, and environmental catastrophes... I couldn't put it down!" (Amazon reader)A YOUNG MAN DISAPPEARS in the California gold country. He leaves...

THERE ARE PLENTY OF WAYS TO DIE in the Grand Canyon.Forensic geologists Cassie Oldfield and Walter Shaws investigate one way: trouble on the canyon's Colorado River. Stranded raft. Life vests unused. Rafters missing.The only clue to the fate of the...

A MYSTERY AT SEA plunges forensic geologists Cassie Oldfield and Walter Shaws into deadly waters.When a boat is found deserted off the California coast, it looks to be a simple fishing accident. But there is nothing ordinary going on here. The...

NO WAY OUT--so says the note in the pocket of the murdered mayor.The volcano beneath her town is seething, and the town's fate now rests in the hands of an emergency planner with a twisted agenda.The mayor's death is personal for investigators Cassie...