Acts is pretty tame as far as sex and drugs go. The apostles even warn people not to fornicate (15:20), so that's good family fun. It is just a tiny bit violent though (the persecution of a religious minority usually is). Though the story doesn't go into graphic details, it's kind of hard not to think of Stephen's bloody body getting bashed with rocks or how gross and painful it would be to get flogged. Stonings, beatings, and murder plots abound. Read this one with a few lights on.