It is a white pill with watson 385 wrote on it do you know what it is?

The best advice I can give you is that you look this up yourself OR take that pill you found and go to one of three places: 1. your local emergency room at the hospital 2. a pharmacy 3. a police station. The pill can be identified there and properly disposed.

To look the pill up, there are a couple sites you can look through:
Common Imprints | Pharmer.org -- Pill Identification Resources (http://www.pharmer.org/imprints)
Pill Identifier - Drugs.com (http://www.drugs.com/pill_identification.html)