  We give quantitative and qualitative results on the family of surfaces in
$\mathbb{CP}^3$ containing finitely many twistor lines. We start by analyzing
the ideal sheaf of a finite set of disjoint lines $E$. We prove that its
general element is a smooth surface containing $E$ and no other line.
Afterwards we prove that twistor lines are Zariski dense in the Grassmannian
$Gr(2,4)$. Then, for any degree $d\ge 4$, we give lower bounds on the maximum
number of twistor lines contained in a degree $d$ surface. The smooth and
singular cases are studied as well as the $j$-invariant one.

Algebraic Geometry;Differential Geometry