Holby’s Casualty is no stranger to heartbreak, but the penultimate episode of the “Supply and Demand” saga may have just set up the most devastating twist of all. Paramedic Iain Dean (Michael Stevenson) has been spiralling for weeks, and now his secret behaviour behind Faith’s back could destroy their fragile marriage once and for all.

Silent With Faith, Honest With Stevie

After a tense first therapy session, Iain has given Faith Cadogan (Kirsty Mitchell) nothing but silence. But while he shuts out his wife, he opens up to Stevie Nash (Elinor Lawless), confiding in her about his fears and frustrations. For Faith, the cold shoulder is torture — and for Stevie, who once drunkenly kissed Iain at Faith’s wedding, the situation is becoming dangerously complicated.

A Shocking Discovery

But the biggest bombshell comes later in the episode, when Stevie discovers Iain in the middle of a disturbing act that could have far-reaching consequences. Shocked, she begs him to think of Faith before it’s too late. The moment leaves viewers asking: has Iain crossed a line he can’t come back from?

Stevie’s Impossible Dilemma

Now Stevie faces the toughest decision of her career — stay loyal to Iain and keep his secret, or betray his confidence to save his marriage. Either choice risks destroying her relationships with both Iain and Faith, leaving the ED’s tight-knit circle on the brink of collapse.

Fans Brace for the Finale

With Sunny fighting for her life, Flynn spiralling, and Nicole reeling from Ngozi’s departure, Iain’s storyline is shaping up to be the most shocking twist of all. The finale promises heartbreak, and fans are already speculating that Iain’s downward spiral could end in disaster.