00:25The Apprentice USACelebrity Apprentice 3Episode 4: Harry Potter TaskBBC One Duration: 1 hour, 20 minutes Tue 15th Jan 2013, 00:25 on BBC One Northern IrelandBusiness competition. The teams have to create a 3D experience for the Wizarding World of Harry Potter - and there is a twist for the project managers.ContributorsParticipant:Donald TrumpGenresFactualFormatsRealityBrandThe Apprentice USASeriesThe Apprentice USA: Celebrity Apprentice 3 Source: BBC Online