Rarely Normal or Normally Rare? Anomalies are by definition different and unconventional. A data point that doesn't follow the general rule. The difficulty with defining the nature of the unconventional resonates with all the steps of trying to find it. In this lecture I'll review the art and science of anomaly detection. We will explore classic and deep learning approaches to define and find anomalies with any domain as well as some motivations to look for them in the first place.