Robert B. Parker’s Wonderland by Ace Atkins Putnam, $26.95, 306 pages, ISBN 978-0-399-16157-5 When a popular and prolific author dies, so do all of his or her characters.  If the author in question has created a serial character, the mourning is even greater because the character is so beloved by legions of invested readers and fans . . . some of whom have been involved in reading the character’s