There has been speculation that a major twist is expected on Downton Abbey this weekend as preview copies of this week’s episode have been withheld by ITV.

Digital Spy reports that previews copies were also withheld for the episodes which featured the deaths of Lady Sybil last season and Matthew Crawley in the Christmas special.

The third episode in the new season is set to feature the introduction of several new characters including former Eastenders actor Nigel Harman who is set to play Green. Harman has described his character as a valet with “no redeeming qualities” and said that he is set to stir things up.

Also due to arrive this Sunday are Tom Cullen’s Lord Gillingham, who could be a new love interest for Mary, Andrew Alexander’s Sir John Bullock, Kiri Te Kanawa as Dame Nellie Melba and Patrick Kennedy’s Mr Sampson.

The episode will feature at house party at Downton Abbey.