Sarah Penner's debut novel, The Lost Apothecary, is an enthralling work of mystery, murder, trust, and betrayal. Set in an atmospheric London, Penner's immersive story flows skillfully from past ...

In the near present, a woman whose marriage is crumbling lifts a tiny sky-blue vial from the bank of the Thames River. In 1791, a 12-year-old girl who has helped commit a murder fills that vial ...