Family owned and operated business since 1995. WinterBerry Background checks provides quick, reliable criminal and civil background checks in the state of MA. Stephen Winter and Casey Berry are licensed MA private investigators with 20+ years experience. Stephen Winter started the business in 1995 with a passion to make Massachusetts a safer place to live. Access to reliable background checks is the gateway for that. Owner, Casey Berry (daughter of Stephen) has three young children and her fathers mission lives on. You can trust WinterBerry Background checks for all of your needs, contact us today.