Lovespell is a 1981 fantasy romantic tragedy film featuring Richard Burton as King Mark of Cornwall.
Harry Hamlin auditioned for the film as well as Clash of the Titans opting to do the latter so he could work with Laurence Olivier.
[3] Lovespell is based around a love triangle between King Mark of Cornwall (Richard Burton), Isolt (Kate Mulgrew), and Tristan (Nicholas Clay).
Isolt persuades Mark to go and take Tristan back to Cornwall.
Mark returns with Tristan barely alive with white sails, but casts black sails when Tristan reveals his plans to run away with Isolt as soon as he has recovered.