Garden of Lies by Amanda Quick

Just finished another new book from WHPL (remember if you put books on hold, when the order comes in, WH residents get it first): Garden of Lies by Amanda Quick.  I'm not a huge Romance genre fan, although I'll always pick up the latest Nora Roberts book, but I was intrigued by the description I read on Amazon of this one.
What would you do if your best friend, also one of your employees, died mysteriously?  The police say it was likely a heart attack, perhaps induced by a drug overdose.  Maybe an intentional overdose, a suicide?  You don't believe it one bit.  Would you try to get justice for your friend?
Ursula is a secretary in Victorian London.  She runs a secretarial firm, one of the few careers open to women.  When one of her employees dies, she begins to investigate, refusing to believe the police report.  The path leads her to an eccentric former archeologist, a man who was believed dead in a volcanic eruption, taken in by monkish weirdos, and converted to veganism.
Together, the unlikely partners set out to find the murderer, discovering American entanglements, drug production, and many more secrets on the way.
Definite surprise twist at the end.
Note brief sexual content.
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