浪子回頭英文係咩

I think it should be : When the lost son is found or When the prodigal son returns.

2007-09-28 21:42:59 補充：
Sorry it should be just "prodigal son" as it means"prodigal son" -ph.1. 回頭的浪子http://hk.dictionary.yahoo.com/search.html?s=prodigal+son

浪子回頭 - To turn over a new leaf.
Hope the above helps you.

When the wanderer returns home.