The unseen guest / Wood, Maryrose

After returning from London, the three Incorrigible children and their governess, Miss Penelope Lumley, resume their normal routine while Penelope continues to uncover information about her past. When a noted explorer's prized ostrich gets lost in the woods, the Incorrigibles lead the search to recover it, but Penelope fears that allowing them to return to the wilderness will cause them to revert to their wolf-like behaviors.

"Miss Penelope Lumley embarks on an investigation into the mysteries surrounding the Incorrigible children, Lord Ashton, the forests of Ashton Place, and her own past"--Provided by publisher.

The children and Penelope, their governess, leave London and return to Ashton Place where Penelope decides to take matters into her own hands and do some investigating to find out the truth about the children, Lord Ashton, and herself.