Howard tells Jimmy and Kim they're like "Leopold and Loeb... two sociopaths." Nathan Freudenthal Leopold Jr. and Richard Albert Loeb, usually referred to collectively as Leopold and Loeb, were two wealthy students at the University of Chicago who kidnapped and murdered 14-year-old Bobby Franks in Chicago, Illinois in May 1924. They committed the murder - characterized at the time as "the crime of the century" - as a demonstration of their ostensible intellectual superiority, which they believed enabled and entitled them to carry out a "perfect crime" without consequences.
Lenny (John Ennis) and Erin (Jessie Ennis) are father and daughter in real life.
This is currently the highest rated episode of Better Call Saul.
John Ennis, like Jay Johnston, are old friends of Bob Odenkirk and have worked with him on "Mr. Show with Bob and David" (1995-1998) and "W/ Bob and David" (2015). John Ennis is also the father of Jesse Ennis, who plays Erin Brill.