"At six foot four he often had to duck to get into buildings.  Still, his height and solid build gave him a huge advantage when interviewing suspects.  He could be quite frightening when he wanted to be, without having to get physical.  In fact, he couldn’t remember ever having to use force to get a confession.  He wasn’t sure the same could be said of some of his colleagues." from 'Foul Play' the first DI Ambrose novel.