 The secret of Mike Brown, unacknowledged for many years, was that Leo Baxendale needed to earn money from Odhams without disclosing to Fleetway that he was now working for both companies.Accordingly, Baxendale now pencilled the drawings, and Brown, who was a cartoon film animator, inked them in.In this way, they turned out together large numbers of "Bad Penny" and "Grimly Feendish" strips, which they sold to Odhams under Brown's name – a situation Baxendale referred to, in his 1978 autobiography, as working "undercover".