After her brother is gunned down by a notorious Hispanic gang, a young woman grows up to become an undercover detective and infiltrates the deadly gang to bring them to justice.

Even though similar ideas have been done before, I?m not sure if it?s ever been done with a woman as the person infiltrating a gang. It would be interesting to see this story from a female perspective, see how she would do the infiltrating and what her role within the gang would be.

I think this log line is good and has all the necessary components, but I don?t like the wording of grows up.? What if you just say, …a young detective goes undercover to infiltrate the deadly gang.?

Also, I think it?s implied that her intentions are to bring the gang to justice and maybe you want to avoid using the word gang? twice. Maybe something like:

After her brother is gunned down by a notorious gang, a young detective goes undercover to infiltrate the criminal underworld.

Or maybe “criminal organization?”