"Detective Elina Stavros of the Crossroads P.D. asks Bert Mangum to do her a favor. Could he help her figure out how the dangerous and illegal drug RDT is getting onto the station? But the more they dig, the more they find, until they're facing a cluster-wide drug manufacturing and smuggling operation. Worse, if they shut it down, Crossroads will go under and the economy of the cluster will go with it."