  We review exclusive top pair production including decays at a future
high-energy lepton collider, both in the threshold region and for higher
energies. For the continuum process, we take complete QCD next-to-leading order
matrix elements for the $2\to 6$ process with leptonic W decays into account.
At threshold, we match the fixed-order relativistic QCD-NLO cross section to a
nonrelativistic cross section with next-to-leading logarithmic (NLL) threshold
resummation implemented via a form factor.
