Firstly, you can structure the logline better. Don't use character names, keep it simple. Just using your own words:
A detective and a team of five reformed criminals struggle to stop the latest menace plaguing Brisbane city.
But, I'm not sure who your protagonist is, or what the story is about. It seems like an interesting situation but why do we care about this detective and why this situation?
You're missing the stakes as well, what is the latest crime menace? Get more specific. A story about a serial rapist is vastly different than one about a pharmacy theft string. What happens if these five criminals fail?
Why does this detective need these criminals?
"After failing to catch a serial killer, a detective hires a group of reformed criminals to hunt down and stop him before he kills again."
That's a very basic idea, but you get the catalyst... the reason for the story, you get why he hired them, how they are doing it, the stakes if they fail (serial killer keeps killing)