No he is not that.
He is s psychopath. But they are not all smashing in doors saying 'here's Jonnie'. He is charming. Like Hanratty did, whose body was exhumed and DNA found him guilty.
Why does he protest his innocence ? I will locate my thread.
He had endured six years at Gresham's,six lonely,wasted years where he grew ever distant from his parents at every holiday,where he stayed in his bedroom communicating with nobody,rather as he lives today. He had two brief round-the-world trips where he could breathe in that felicitous interlude,a handful of one night stands which meant nothing,and a passionate affair with Suzette,with whom he drifted apart when she could bear no more children. He almost found happiness with Julie but was unprepared and unready for domesticity,and the stifling noose tightened once more as a bleak future beckoned among that desolate Essex landscape and the yearning to return to the bright lights of London to experience what would merely have been more transitory delectation..