Battery keeps dying overnight, is it the battery or something draining it?

[ricardobravo]

Third time this month my car wouldn't start in the morning. Battery is only about a year old so I don't think it's just worn out. Jumped it each time and it runs fine after that, but leave it overnight and it's dead again. Something is clearly draining it but I have no idea what. I read about parasitic draw tests but I don't have the tools or the patience to figure it out myself. Someone mentioned Royal Prince Auto Care Dubai and said they're good at electrical diagnostics, not just swapping parts. Has anyone dealt with a similar issue? What did it turn out to be? I've heard it can be anything from a faulty module that won't sleep to a boot light staying on.