Second and final appearance of Ray Wise as attorney Tom Blanchard.
Gennifer's drug of choice was crystal meth, a crystalline street form of the prescription drug methamphetamine. Initially, use of crystal meth brings on a sense of euphoria along with a heightened feeling of alertness and lucidity. However, the long-term effects include hallucinations, paranoia, mood swings and rages, pain inhibition and nervous repetitive behaviors - all of which Gennifer exhibited.
Ostensibly this episode is about a case of mistaken identity where the wrong female drug addict has been shot and killed. But it also refers to Brenda herself who is cited in a deposition for Pope's divorce case by his estranged wife.
Gabriel describes Sammy as driving north on the 405 freeway from Newport Beach to Los Angeles. Newport Beach is a wealthy, conservative community in northern Orange County. The main arterial freeway between Orange County and much of Los Angeles is Interstate 405 (or as it's known locally, "the 405"). The 405 follows the coastline northwest through Long Beach and western Los Angeles, connecting with freeways leading to the communities surrounding LA as well as to downtown LA before meeting Interstate 5 north of Los Angeles.
In reality, Sammy would not likely have used the 405 for his whole trip, but instead exited onto I-110, another arterial freeway, which would have taken him to US-101, the freeway that bisects Hollywood, where Gennifer lived.