try send him a post card to rental address...

来源: 于 2012-01-31 15:23:32 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

if there is a forwarding address, post office will send a reply to you.

then you can file and sue him with new address, otherwise, you can try people search or something similar...