An exciting mystery part Simenon, part X-Files.

In 1978, a pair of young sisters drowned in a village in the Marne. It is said they were found in a pond, hand in hand, in their communion dresses. Intrigued by this rural legend, Manon Gauthier-Faure travels to the village where it is said to have taken place, but once there, the mystery only deepens: press clippings from the time are few, and the locals seem to have forgotten all about the tragedy. Stranger still, it seems the two sisters are showing up in the nursing home... as ghosts!