This pilot study was conducted in an attempt to better understand the jailed population in terms of the number of families at risk and the relationship between parental substance use and incarceration and its impact on the children of the incarcerated. The aim of the study was to describe the jailed population, their needs in relation to substance abuse and parenting issues, to explore children's risk factors resulting from having a parent with substance abuse and/or criminal justice involvement, and ultimately to offer a point of intervention for parents and children at risk. Participants included 229 men and 52 women aged 18 and older, who were in their first 48 hours of incarceration in the Santa Clara County Department of Corrections in August 2003 and who where voluntary participants in the National Institute of Justice's (NIJ) Arrestee Drug Abuse Monitoring (ADAM) Program (ARRESTEE DRUG ABUSE MONITORING (ADAM) PROGRAM IN THE UNITED STATES, 2003 [ICPSR 4020]). Male subjects were chosen through a random selection process, while female participants were taken from a convenience sample. The pilot study used a questionnaire completed as an addendum to the ADAM program main interview. Major types of variables included in this study are type and duration of alcohol/drug use, family history of incarceration, number and ages of children for whom the respondent was the primary caregiver, social consequences for the child due to the incarceration of the respondent, and if the child had any problems with drugs and/or alcohol.