Notorious serial killers. Unsolved murders. Terrorist bombings. Shocking and scandalous crime stories often capture the American public's attention. Scientists, theorists, and law enforcement examine the evidence in each complicated case. Conspiracy theories emerge, too, despite systematic, professional investigation. Some questions still remain unanswered in many famous cases. Dig into the American Crime Stories series to start sleuthing. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.