Peter Murrell, who is also SNP chief executive, will be quizzed by MSPs who were unhappy about his first evidence session in December.A special Holyrood committee is investigating the Scottish Government’s unlawful probe into sexual misconduct complaints against the former First Minister.Salmond successfully pursued a judicial review over the Government probe and the taxpayer was saddled with a bill of over £500,000.The fiasco also ended the long-standing friendship between Sturgeon and Salmond,