: "Partings" — Lorelai gives Luke an ultimatum about their marriage, leading to a major relationship breakdown.
: "Love's Labor" — Shaun and Lea head to the delivery room while a tragic accident pulls the rest of the staff away. [S6E22] Old Issues
: "Reckoning" — The team faces off against Superintendent Kelton, leading to a shocking murder mystery cliffhanger. : "Partings" — Lorelai gives Luke an ultimatum
If you were looking for a different series, several other shows have notable 22nd episodes in their sixth seasons: [S6E22] Old Issues