Dr Shah sees a patient, Lisa, who claims the numerous painkillers she has been prescribed for excruciating back pain are causing her problems. Despite having undergone several invasive spinal operations, she is still in pain, but compares the effect of painkillers to feeling drunk on 12 pints of lager. Meanwhile, Dr William Laird tries to persuade regular patient William that his habitual cannabis use is potentially the most significant contributing factor behind his depression and long-term unemployment