Ghosts in the Garden — Judith Silverthorne

On a field trip to Government House, Sam and J.J. discover that things aren't as they appear, as they find themselves travelling from the present to the past and back, and see the ghost of a woman who mouths "watch" to them. The girls must navigate the grounds of Government House as they search to discover who the mysterious woman is and what she wants...before they're stuck in the past for good.

Ghosts in the Garden is the sequel to Judith Silverthorne's The Ghosts of Government House.