  Spectroscopy of excited baryons with strangeness $S=-2$ is stimulated by
recent experimental developments. Here we focus on the $\Xi(1620)$ which
locates close to the $\bar{K}\Lambda$ threshold. To take into account the
threshold effects, we construct the coupled-channels meson-baryon scattering
amplitude where the $\Xi(1620)$ appears as a resonance. We demonstrate that the
$\bar{K}\Lambda$ threshold effects distort the peak of the $\Xi(1620)$
resonance from the simple Breit-Wigner distribution.
