  Recent Gaia observations suggest that some hypervelocity stars (HVSs) might
originate from outside the Galaxy. We ask if these HVSs could come from as far
as Andromeda. Therefore, we simulate HVSs originating in Andromeda with initial
conditions based on attributes of high-velocity stars measured in the Milky Way
and a simple model for the gravitational potential of Andromeda and the Milky
Way. We evaluate the validity of this scenario based on the simulation results.
While we expect the vast majority of HVSs in our Galaxy will originate here, we
expect the number of stars present from Andromeda at any one time to be between
twelve and 3910, depending upon model assumptions. Further, we analyse the
properties of HVSs that are able to reach the Milky Way. We discuss whether
they could be detected experimentally based on recent constraints set on the
ejection rate of HVSs from the Milky Way centre
