In the nearly six-year run of AMC’s Break­ing Bad, Walter White (portrayed by Bryan Cran­ston) has amass­ed a long catalog of sins. Where to start?

Walt is a high school chemistry teacher who has lured and cajoled a former student, Jesse Pinkman (Aaron Paul), into a life of high crime. Jesse was already a junkie and a ne’er-do-well, but Mr. White—as he is always ad­dressed by Jesse—turns Jesse into a fellow cooker of methamphetamine. Before long Walt has talked Jesse into committing murder.

Walt has also had occasion to watch Jesse’s girlfriend choking due to a drug overdose. He could have saved her easily enough, but it would not have served his purposes of more easily manipulating Jesse, so he watched her die. He has never mentioned this to Jesse.