Dexter adjusts to his new job as a forensics intern at Miami Metro, as Harry returns to work after his medical leave. Deb lashes out at her dad by engaging in petty criminal behavior.

Dexter goes after a loan shark with ties to Batista, as Harry is told to keep an eye on Maria Laguerta, Miami Metro's newest homicide detective. Deb throws a party to win the favor of her volleyball teammates.

Dexter targets a retired mob hitman (who may still be killing), as Harry works the gruesome murder case of a 10-year-old boy. Deb sneaks into a nightclub with Sofia and meets an exciting new friend.