Triangle Man, Triangle Man, doing the things Miller can…. It’s a packed action-movie penultimate episode for Season 4, where The Expanse’s theme of interdependence is brilliantly illustrated with gunfights, railguns, last-minute rescues, and an Eye of Sauron. We compare “Saeculum” to PROMETHEUS and of course find the latter wanting, and Kayti gets her Majel Barrett on. Chip Sudderth, Warren Frey, Kayti Burt and Jen Burt.