Never Marry a Doctor - S3.E9

The Stones' cleaning lady has troubles. Her baby is sick and her husband lost his job due to illness. Alex takes care of the baby's health, and Donna hires the husband to do odd jobs in their house. Now the Stones have troubles. The twenty dollars that Alex left on the counter for Mrs. Cruikshank's charity is missing. Could the handyman be a thief? Mrs. Cruikshank thinks so and makes Donna wonder if it's true.