Nicholas Mowbray, a 43-year-old lawyer and former political adviser, has been missing since May 20, when he was last seen in Sydney's Chinatown after attending the 2026 CX Conference at Park Royal in Darling Harbour. Mowbray, who has extensive experience in government advising, failed to return for the conference's second day and has not contacted family, friends, or colleagues since. Described as witty and much-loved, he worked with notable politicians like Greg Combet and is currently employed at Muswellbrook Shire Council. The police investigation is ongoing, with authorities confirming they have no leads on his whereabouts. Mowbray is known to frequent areas around Lake Macquarie, the Hunter Valley, and Newcastle. Friends expressed their worries, emphasizing the urgency of the situation as police have issued a public appeal for information regarding his disappearance.