When Lily confessed to her crimes, she said she did it as she was tired of being passed over for promotions in favour of British officers.
She was jealous and resented the fact that despite all of her hard work, someone else was always getting promoted above her.
This was also when DS Camille Bordey (Sara Martins) was introduced as Richard originally suspected her.
Camille then had to reveal her identity as an undercover police officer who was also investigating illegal activities on the island.
By the end of the first episode, Richard had become Saint Marie’s Detective Inspector and Camille as his Detective Sergeant.
Death in Paradise is available to watch on BBC iPlayer.