  We study the prospects for excluding or discovering vectorlike leptons using
multilepton events at the LHC. We consider models in which the vectorlike
leptons decay to tau leptons. If the vectorlike leptons are weak isosinglets,
then discovery in multilepton states is found to be extremely challenging. For
the case that the vectorlike leptons are weak isodoublet, we argue that there
may be an opportunity for exclusion for masses up to about 275 GeV by direct
searches with existing LHC data at sqrt{s}=8 TeV. We also discuss prospects for
exclusion or discovery at the LHC with future sqrt{s}=13 TeV data.
