A call or visit from Child Protective Services (the investigatory arm of the Department of Family and Children Services) can be terrifying. Many parents do not know where to turn when they are contacted by a CPS investigator. The Internet is full of sites advising parents to simply slam the door or hang up the phone, but this response is unwise. CPS has a duty to investigate all credible allegations of child abuse or neglect. Failure to perform that duty has resulted in some of the horrific stories we have seen in the news over the past few years. At the same time, parents have a duty to protect their children from unnecessary trauma and to protect their family from unreasonable invasions of privacy. The wisdom of how to react when CPS comes calling is nuanced and requires consultation with an attorney who specializes in child welfare law.