: Sam and Holly had been in a secret relationship.

: Holly was pregnant, and she and Sam planned to run away together to Manchester to start a new life.

In The Bay S01E06, “MPC” transforms from an obscure forensic abbreviation into the story’s moral and dramatic compass. It proves that in Morecambe Bay’s murky waters of secrets and lies, science can sometimes speak louder than witnesses. For viewers, the episode is a tense reminder that the most damning evidence often lies not in a confession, but in a chemical ratio.