  We present a search for a pentaquark decaying strongly to $pK_S^0$ in $\gamma
N$ collisions at a center-of-mass energy up to 25 GeV/$c^2$. Finding no
evidence for such a state in the mass range of 1470 MeV/$c^2$ to 2200
MeV/$c^2$, we set limits on the yield and on the cross section times branching
ratio relative to $\Sigma^*(1385)^\pm$ and $K^*(892)^+$.
