Businessman Robert Vadra has appeared before the Enforcement Directorate (ED) after being summoned for the second time in a money laundering case.The case is linked to a land transaction in Haryana, involving a land purchase in 2008 by Vadra's firm, Skylight Hospitality, for Rs 7.5 crore.Vadra had previously skipped the first summons issued on April 8 and will now be questioned by the ED under the Prevention of Money Laundering Act.Vadra has stated that he has nothing to hide and is ready to answer all questions, referring to the summons as a 'witch hunt.'