This was my first book by Kage Baker, (and, the first in her 'Company' series)
It reminded me quite a bit of OS Card's Pastwatch, which is one of those books I'm always recommending to everyone! ;-)
It postulates a 24th-century company, that in an effort to save lost species and works of art, trains technologically-enhanced specialists to live as undercover agents throughout history...
Like most time travel stories, there are some logistical issues... but the book focuses on the emotional ramifications rather than the tech details, telling the story of Mendoza, a girl rescued(?) from the Spanish Inquisition and sent to Elizabethan England to rescue rare plants from a country manor's garden, where she falls in love with a religious zealot.
An interesting time travel book, first in a series. Would be good for those who liked Connie Willis' To Say Nothing of the Dog.
First of the fascinating and addictive series by Kage Baker about Dr. Zeus, the Company that mines the past for profit. Kage Baker's fist published novel, and a stunner.