Tandy and Tyrone both remember waking up on the beach after the accident in episode 1x01 "First Light". Tandy watches a promotional video with a Roxxon executive cleaning up a beach in episode 1x05 "Princeton Offense". Tyrone, Tandy, and Melissa Bowen light a lantern to remember their loved ones in episode 1x08 "Ghost Stories". Appears in 1 more episode.
Detective O'Reilly gets a call about Tyrone's visit after having sex with another cop in the back of a squad car in episode 1x05 "Princeton Offense".