Chloe's date around Ben's apartment got off to a bad start when she accidentally set fire to it. The box of fireworks under the table didn't help things. Ben got trapped under lots of rubble, Chloe tore her fishnets.
Mary Longworth, an elderly respectable woman, suddenly freaks out in a supermarket for no apparent reason, causing damage and getting herself arrested. It turns out that she has been on the same medication for many years but all of a sudden it has started to produce a bizarre side effect, explaining her uncharacteristic behaviour.
A masked intruder sets fire to gas cylinders in the Riverside reception, setting off a massive explosion. Sarah gets caught in the blast, whilst Helen, Jack, (who have also just announced their engagement), Nathan and Tasha are all trapped inside.
Jack and Ria get into an argument. She pushes him down the stairs, and then takes an overdose. Jack goes into shock and dies in Helen's arms. Julia gets locked up, and Nathan finally comes round after the explosion.