Ruby Holler - Susan Creech

Ruby Holler is about 13-year-old twins, Florida (girl) and Dallas (boy) who are abandoned on the doorstep of an orphanage as infants. They are very active and get into a lot of trouble, so they never last long in their foster home placements.

The Trepids who run the orphanage are emotionally abusive and neglectful. Sairy & Tiller Morey, a kind old couple take the twins home saying they want one of each of them to go on a trip with them.

In the long run, they don't go on their trips, but in the mean time, they decide to keep the twins.

Z is the Moreys' neighbor. He is hired by Mr. Trepid to find out where the Moreys keep their money. He, however, remains faithful to the Trepids, and in the process, finds out the twins are his children through his ex-wife who left him without his knowledge that they existed.

Not a thickly-plotted book, but the characters were nice.