The fact that neutrinos are massive particles can be neatly explained by the existence of (at least two) additional neutrinos, called sterile neutrinos. Depending on their mass, sterile neutrinos can be looked for in various experiments. Their presence can be indirectly probed by measuring the ultra-rare neutrinoless double beta decay of various isotopes and, if we are lucky, directly in current and future collider, neutrino, beta-decay, and beam-dump experiments. I will discuss the interplay of these different searches, the experimental and theoretical prospects, and whether they could tell us about leptogenesis as a solution to puzzle of the matter/anti-matter asymmetry in our universe.
