Chapter 8: Help

I am trying to finish up the next chapter to Runway Walter and I am stuck. For those who can help please do. What is an Irish term for "bad guys" in general. For example: I could use the word "thugs" as a descriptive word but I have Ian giving details of the kidnapping to his Captain and one other person and why he didn't call the crime in immediately. So, I am hoping someone out there could help me. Please and thank you.