In 1982, River was cast in the short-lived CBS television series, Seven Brides for Seven Brothers, in which he starred as the youngest brother, Guthrie McFadden.
V roku 1982 bol River obsadený do televízneho seriálu stanice CBS, Sedem neviest pre sedem bratov, v ktorej stvárnil najmladšieho brata Guthrieho McFaddena.