In the episode Steve dreams that he is his grandfather solving a case in the year 1941, on the days leading to the Japanese attack on Pearl Harbor.

Steve receives an old belonging of his grandfathers in which he finds a cold case former Honolulu Police Department Detective Chang Apana was working about Lila Kekoa, a girl who was found murdered.

Steve and Milton look towards Earl Blackstone for answers who points them to Alexa Alana, a singer and her manager “Biggie” Tupa.

The two begin putting the pieces together and find a house where a plans were made to build a pool.

An HPD crime scene unit excavates the back yard and finds an old car buried with Lila's remains.

Richard Herd was cast in the episode to play Milton Cooper, a retired Honolulu Police Department detective.

[2] Meanwhile, Chris Mulkey was cast to portray a villain named William Pettifer.

[5] Filming for the beginning of a car chase in the episode took place outside the Wo Fat building.

This episode featured a slightly edited version of the Hawaii Five-0 theme song for the first time in the series history.

[10] The episode aired on November 9, 2018 and was watched live and same day by 7.5 million viewers.