The Prisoner of Heaven, by Carlos Ruiz Zafón

Zafón writes with humor, imagination and heart.  Characters and places that first appeared in Shadow of the Wind and Angel's Game are back, Daniel Sempere, Fermín Romero de Torro, and David Martin and the loves of their lives. The book switches between Barcelona in 1939-41 and 1957-58.  The early years tell of Fermín's time as a political prisoner with David Martín, and the later tell of Daniel's encounters with ghosts from Fermin's past.