: Danny’s mother, Clara Williams (guest star Melanie Griffith), arrives on Oahu with a "bombshell". After decades of marriage, she announces she is divorcing Danny’s father because she is tired of waiting for her turn at a life of her own now that he has finally retired.
: One of these illegal guns was sold to a prominent defense attorney, Gerard Burns . Burns confesses to killing Ingram after discovering the agent was having an affair with his wife. [S4E15] Pale'la (Buried Secrets)
The case begins when a homeowner accidentally hammers a nail into a wall, only to find the mummified remains of , a real estate agent who had been missing for six months. : Danny’s mother, Clara Williams (guest star Melanie
By the end of the episode, the "buried secrets" are brought to light: two victims are exhumed, a marriage is ending, and Grover’s haunting past is no longer a solitary burden. Pale'la (episode) | Hawaii Five-O Wiki | Fandom Burns confesses to killing Ingram after discovering the
: The team discovers an employee at the smelter has been stealing and reselling confiscated firearms.
: In a final, chilling twist, Burns reveals he also murdered his wife to grant her "dying wish" to spend eternity with her lover—burying her body behind the wall right next to Ingram. Personal "Buried Secrets"
: Dr. Max Bergman determines Ingram died from a gunshot wound. The bullet matches a weapon that was supposed to have been destroyed in a police smelter.