Mandie and Jonathan's Predicament

is the twenty-eighth book in the Mandie series.
==Book Description==
Mandie and Celia head to New York City to visit their friend Jonathan Guyer for Thanksgiving. While staying at the Guyer mansion, they encounter a stray dog, a strange girl, and the butler's secret meetings with a foreign-speaking man. Searching for answers to these mysteries leads Mandie and Jonathan into quite a predicament!
(Description from Mandie.com)