Callahan, Greven, Rilley & Sinn, LLC

John greven is an amazing defense attorney he’s saved my life more than once!! Love him

Mr. Greven is the best attorney in the area...He represented me on a federal case and did his job getting me the best deal possible. He always came to his scheduled visits when he said he was gonna be there and always came prepared. He was a straight shooter he told me what was gonna happen when i was very doubtful.I didnt cooperate with the government and still recieved what i felt was a fair sentence. He even gave me some inside advice on what to expect when i got to the FEDS i would defiantly use JOHN GREVEN again if needed.. THANK YOU AGAIN JOHN FOR EVERYTHING!!!

If you need a Lawyer on Retainer, Mr. John Grevin is your man! You have a tough criminal case and short of hope, let him reassure you that there is more gain than loss! Thanks for taking care of my family and making sure we all able to stick together! ????????????????????????????????

John Sinn is a great lawyer!! He was my lawyer 2 or 3 times and did a great job! I couldn’t be more pleased with the outcome!!! Thank you john sinn, from rachael betancourt!

If your federal I wouldn't recommend this Atty. I strongly believe he's in there pockets. Didn't work for me or my case. From the get go he never showed one once of concern nor did give hope in fighting case pretty much just kept telling me I was screwed. Didn't even try to fight for me not once....