Hypervelocity Discoveries with Gaia DR2

After only two weeks Gaia DR2 had revolutionised the study of fast stars by enabling the discovery of white dwarfs moving at 1000s of km/s; the elimination of hundreds of candidate hypervelocity stars; and the proof of an 8 solar mass star having been ejected from the LMC at 870 km/s. I will present these three results and discuss the implications for the occurrence of both double-degenerate Type Ia supernova and intermediate mass black holes in star clusters. I will go on to summarise how the field has advanced in the subsequent months and giving particular focus to my own work on the mystery of the fastest star in the Gaia DR2 RVS sample and the possible extragalactic origin of the main sequence hypervelocity stars in the halo.