We’ve agreed to two more series but I could get into trouble for saying that…It just depends on Martin and I’s availability, how long we can keep it going. It depends on Steven’s ability. I’d love to keep it going.
Benedict Cumberbatch on Series 3 and the future of Sherlock
Source: Jones, Paul. Webb, Claire. “Benedict Cumberbatch confirms Sherlock series 4. Radio Times. 12 March 2012. <http://www.radiotimes.com/news/2013-03-12/benedict-cumberbatch-confirms-sherlock-series-4>