The Holy Innocents is book 4 in Roger the chapman series by Kate Sedley. I simply love this series. I'm only sorry that our library doesn't have book one or book three. I searched the kindle library as well and came up empty.The two books I've read work as stand-alone titles, however, you miss certain events that lend information to subsequent tales. In this adventure, Roger (a 13th century traveling peddler) finds himself widowed with a baby after his wife died in child birth. I feel I missed a big story from book three to know how that happened! He leaves his baby with a nurse maid and sets out for the road.Since Roger is a peddler, it is easy for him to bring news from villages he has visited along with his wares. People (mainly women) usually need to purchase something from him, and they are eager to hear about what is going on elsewhere. In this story, he encounters a tale of a mysterious disappearance and death of two children---the holy innocents. Kate Sedley really makes you enjoy this time period of England. She tells a fascinating story so that I hear Madrigal music in my head, and I smell stale ale in the air! A very enjoyable mystery series for all readers.