Together with his brother Desmond, Alexander pulled off the most notorious
robbery of the century, the Great Gringotts Job. Though the subsequent trial
shed some light on the crime, much remains a mystery even today. It became
quickly clear that it was an inside job, and that Last, a bookkeeper, was the inside
man. Last was somehow able to enter the 'impregnable' Gringotts vaults at will,
perhaps with the rumored 'Key of Duncan.' He also constructed a miniature model
of the entire Gringotts labyrinth from a handful of sand -- or may have. This, like
so many aspects of the case, remains conjecture. When the heist was discovered,
it was originally believed that the Brothers Last had somehow stolen all the gold
at once; it is now believed that they removed the real treasure and replaced it with
shimmertwin over a period of at least two years. Last has not been seen since the
moment that it was discovered that the Alexander Last on the witness stand at his
trial was only a shimmertwin itself, which then stood up, tipped its hat
to the gallery, flickered and disappeared.