Peter Tobin has at no point in his life been a tall strapping red headed man. MO completely different also. I'm not convinced there is a Bible John or that the murders were related at all.
He could have dyed his hair. The coincidences nevertheless are striking:
1) He lived in Glasgow at the time of the murders and married his first wife whom he had met at the Barrowland Ballroom in 1969.
2) His former wives all stated that he attacked them whenever they were undergoing their menstrual cycle, a feature of the case with the Glasgow victims.
3) Tobin was a Roman Catholic who had a modicum of religious knowledge, which might tie him to the biblical references he was known to have uttered.
4) Two people who knew the victims Dinah McNicol and Jean Langford each gave statements during trial testimony recalling the conversation of the man known as Bible John, who had mentioned to both victims that he didn't drink on Hogmanay and his cousin had scored a hole in one on a golf course.
5) After Operation Anagram in 2006 two further victims of Tobin at the Barrowland Ballroom in the 1960s came forward alleging that Tobin was Bible John.