Casualty marked its 1,000th episode with the return of actress Cathy Shipton as Lisa "Duffy" Duffin and fans got all nostalgic.
Cathy, who featured in the original cast when the medical drama launched in 1986, resumed the role of Duffy for an adrenaline-charged instalment about the staff and patients of Holby City Hospital's emergency department.
The London-born star spent 17 years in Casualty and has long been a favourite with viewers. She made a brief return for the show's 20th anniversary in 2006 before popping up again in 2015.
Duffy heads back to Casualty permanently in August and viewers couldn't wait to welcome her back.
Great to see Duffy back in casualty . love the TV show casualty . congratulations on 1000 episode .
-- ruth kelleher (@mimikuzyk) June 25, 2016
-- ?..Faye..? (@xpinkpixiedollx) June 25, 2016
Duffy slaying in casualty??
-- Sara (@sarafudgey) June 25, 2016
-- Mat (@SleekHorizon) June 25, 2016
Duffy!!!!!! Casualty! So excited :D
-- name cannot be blank (@friendshiptree3) June 25, 2016