The family and servants travel up to London for the summer season.
The Crawley's impressive London residence, Grantham House, is seen for the first time.
Martha Levinson and Cora's brother Harold make an appearance.
And Carson treats the staff to a special day out.
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Watch the trailer for Downton Abbey's 2013 Christmas Special episode.
It's the summer season and as part of Rose's 'coming out' she is to be presented at Buckingham Palace.
Watch the trailer for the series finale of Downton Abbey series four.
The Bizarre is coming to Downton, but will the fun of the fair bring with it some darker revelations?
Amid the fallout of the eventful house party a trip to the bright lights of London is planned. Here Sir John Bullock shows his true colours and Rose finds gallantry comes from an unexpected quarter.
Back at the Abbey Mary faces a pressing question about her future, Isobel accepts an offer from Dr Clarkson which rekindles her social conscience, and the manipulative Edna finds herself outmanoeuvred.
Join us behind the scenes as the cast and crew discuss the future for the characters of Downton Abbey.
Watch the exclusive interviews above.
An extravagant house party at the Abbey gives the Crawleys a chance to reconnect with old friends and culminates in a performance by opera singer Dame Nellie Melba.
But some guests prove more welcome than others and along with the celebrations come skulduggery and heartache.
Watch the trailer for Downton Abbey series four episode two.
How is Robert adjusting to Mary wanting more involvement in the estate? How close will Edith and Gregson become? And can Rose avoid causing any trouble at a York tea dance?
Julian Fellowes, Hugh Bonneville and Michelle Dockery welcome you back for the new series of Downton Abbey.
The fourth series sees the family reeling in the aftermath of terrible tragedy but with new life, in the form of babies George and Sybbie, comes new hope, as the much-loved characters take tentative steps into the Roaring Twenties.