Two characters mention having sex outside of marriage. Another talks about his wife not giving him sex.
Violence & Gore
Mild
No onscreen violence. Individual murder, mass murder, kidnapping, torture, and domestic abuse are mentioned and described in low-to-moderate detail throughout the show. Sometimes, the characters are successful and sometimes, they aren't. Much of the violence discussed throughout season 1 involves children.
Profanity
Mild
Bulls*** is used once in season 1 episode 4. The R-word is used twice by a kid in season 2 episodes 4 & 5. All other language is minor (i.e. "hell").
Alcohol, Drugs & Smoking
None
A brief mention of a father's drinking problem. No alcohol is shown on screen.