This is one of the most ridiculous theories out there.reddit legal experts say that as there was no case to answer the defence didn't need to call any witnesses - except the plumber of course
The idea that Myers didn’t bother with the equivalent of an alibi because he thought there was no evidence against her? I don’t think any barrister, especially one as experienced as Myers, would take that kind of gamble with an (hypothetical) innocent persons life.