Most neck lumps are benign, but cancer is a possible cause. For adults, the chance that a neck lump is cancerous increases after the age of 50, according to the Cleveland Clinic. Lifestyle choices, such as smoking and drinking, can also have an impact.
Moreover, there are several theories whether or not Dr Wells in the one who killed Barry's mother. Movie pilot speculates that even though Dr Wells is the Reverse Flash, he isn't the one who killed Nora Allen.
While on a phone call with Barry Allen, Captain Cold appeared and froze Iris's hand that was on the phone. Fortunately, Barry heard everything that happened and traveled to Las Vegas as The Flash. In the process he freed an unconscious Iris and stopped Captain Cold.