The Haunter (The Sentinels Series, #2)

Rachel Rubin, an American reporter, is only interested in writing about the war, but England in 1945 is swarming with ghosts who need her help. She is the only person who can help them come to terms with their deaths and finally move on. After Rachel's husband, Tony, inherits a manor near the Scottish Border, they decide to travel there for a vacation away from all those ghosts. But not before they attend a secret séance led by an infamous medium, Madam Castanos, with their friends, Charlot...