"How I Met Your Mother" Season 9, Episode 6 ("Knight Vision") seems to be rich in plot lines. Barney (Neil Patrick Harris) and Robin (Cobie Smulders) steal their best friends' how-we-met story. Meanwhile, Edward Hermann guest stars as the priest officiating the couple's much-awaited wedding. Should fans expect some Cristin Milioti scenes this week?

Spoiler Alert: This feature contains spoilers for those who have not seen How I Met Your Mother Season 9, Episode 6 ("Knight Vision").

'How I Met Your Mother' fans react to Season 9 arcs on Tumblr.com. (Credit: CBS, Tumblr @himymconfession)

Ted (Josh Radnor) finds himself a wedding date, Lily (Alyson Hannigan) is still alcohol-dependent, and Marshall (Jason Segel) gets to know more about his road trip companion. These are revealed in the episode synopsis for "Knight Vision." But nothing has been reported about the titular mother.

However, Ted Mosby will be choosing his wedding date among three girls. And the teasers say Ted will be choosing poorly. There could be another mother bit here.

HIMYM 9: The 'Mother' Scoop Round-up

In a previous interview, Milioti mentioned she's looking forward to seeing the fans react to a wonderful scene she filmed with Josh Radnor. But this doesn't air until November. Since the 2-part How I Met Your Mother Season 9 premiere, Milioti hasn't been in the show's time jump treatment.

In another interview, the show runners said the next time Cristin Milioti is seen on How I Met Your Mother, the moment will be a crowd pleaser.

In other reports, Cristin finished filming the season premiere for HIMYM 9 without having learned of the mother's name.

Anticipating Cristin Milioti's next frame in HIMYM is like playing Finding Waldo. Interestingly, Ted Mosby did suit up like Waldo in "Last Time in New York." Could it be some trick to tell fans to stay alert?

Neither Waldo nor Cristin showed up in "The Poker Game" on the Oct. 14 episode. Katie Holmes was seen in an edited half-second clip. HIMYM viewers who blinked in that instant would have missed her. Perhaps fans should be in the lookout for more of these brief moments.

How I Met Your Mother Season 9: Marshall and Daphne's Road Trip

Marshall gets to know more about Daphne (Sherri Shepherd) in "Knight Vision." So much screen time has been given to Daphne as Marshall's road trip buddy. It would be quite a treat to fans if she's related to "the mother." No spoilers have been reported on that, though. So far, viewers have seen Daphne and Lily have become phone 'pals' through Marshall.

VIDEO: How I Met Your Mother 'Knight Vision' Sneak Peek Clip

How I Met Your Mother Season 9, Episode 6 airs on U.S. channel CBS on Monday. The hit sitcom is on fast track for Australian viewers on Seven. Anna Camp ("True Blood") joins Edward Hermann and Sherri Shepherd as guest stars in this episode.

More 'How I Met Your Mother' and TV Guide Features:

How I Met Your Mother Season 9 Spoilers: Katie Holmes Spotted, Show Creator Drafts Episode 20 - in Tears [PHOTOS]
'How I Met Your Mother' Season 9: Synopsis, Sneak Peek Video Released for Episode 6 'Knight Vision,' Anna Camp as Ted Mosby's Date [PHOTOS, VIDEO]