The Fourth of July is the busiest day of the year for the SAF3 team; their skills and courage are pushed to the limit when they respond to an offshore explosion.

Rachel goes on the warpath, lashing out at Sarah's nearest and dearest. While she tries to keep her loved ones safe, an unexpected visitor threatens to derail Sarah's plans.

Leonardo returns to learn that Duke Federico has been ruling Florence with an iron fist; a sinful Riario seeks redemption; King Ferrante negotiates with Lorenzo.

Host Andy Samberg; St. Vincent performs.

In a special episode, the queen of the Australian kitchen, Maggie Beer, returns to the kitchen for the Mystery Box challenge. Who will impress the judges in the challenge?

Following Bert's death and its subsequent cover-up, those involved look for inner peace. Sarah battles her own inner demons aware that Colin's suffering is tenfold.

Mikey struggles to convince the others that a new mutant is trying to attack and capture people using living pizzas.

Iron Man's confidence is shaken after he inadvertently puts Falcon in harm's way. When the Cabal pulls the trigger on its final plan, Tony has to put aside his personal dilemma and be the leader he was born to be.

The detective investigates the mysterious death of businessman John Shearwood, found floating in the water under the Gateshead Millennium Bridge when he was supposed to be on a golf trip to Ireland. The man's wife Stella and brother Luke are baffled to discover he was working as an informant for HM Revenue and Customs. Chief Revenue investigator Owen Preece reveals John's business manager Mark Donovan has been running an alcohol scam through their haulage firm and the deceased had agreed to offer information in exchange for immunity from prosecution. Was his cover blown? Owen doesn't think so, and Mark has an alibi - unlike John's wife.

Kieren and Simon find themselves being thrown together on the Give Back Scheme, much to Amy's annoyance. Simon tries to reassure a worried Kieren that he loves Amy as friend and nothing more. Gary attempts to deal with the fallout from last night's patrol, and is furious to find out that Jem has confessed to Maxine.