What happened to millions of euros of investors’ money? That was the key question the joint liquidators of the collapsed BlackBee group wanted answered as they summoned the group’s founder David O’Shea to face a High Court grilling. So explained senior counsel Lyndon MacCann on behalf of his clients, EY liquidators Luke Charleton and Alan Large, to Mr Justice Michael Twomey on Tuesday morning.  The liquidators of the Cork-based investment group had received a “barrage of correspondence” over the last year from O’Shea and Carl Dillon, an accountant and advisor to O’Shea, that was “full of words but short on…