'Once Upon A Time' Season 5 Episode 17 Online: When, Where To Watch 'Her Handsome Hero'

Tonight is an all-new episode of "Once Upon a Time" on ABC and it looks like we'll be seeing more of lady Belle (Emilie de Ravin).

If you recall, in last weeks episode, "Our Decay," Hades (Greg Germann) forces Gold (Robert Carlyle) to create a portal that brings Zelena (Rebecca Mader), Belle and Zelena's baby to the Underworld. Unfortunately, when they arrive, Zelena discovers that Hades is behind this plot and that her magic is too weak to protect her child, while Belle learn the truth from Gold about reclaiming his powers and her pregnancy, as well as the contract with Hades.

Now with Belle in the underworld it looks like we'll be diving into her past. From the promo trailer for episode 17, we know Gaston (Wes Brown) will make his appearance and seek revenge on the Dark One for stealing his love away. We also know Hades is after Belle's baby, but we don't know to what end.

Furthermore, from a sneak peek clip we see Emma (Jennifer Morrison) waking up from her dream determined to defeat Hades. While in the library, Regina (Lana Parrilla) taps the heroes to help her crack Hades' protection spell on the elevator door. Emma and Regina attempt to use their magic to open the door, but we don't know if they'll succeed. Check out both the promo trailer and sneak peek clip below.

According to Futon Critic, the synopsis for episode 17, "Her Handsome Hero," reads:

Belle turns to Rumplestiltskin with hope of finding a way to protect their child from Hades. However, they disagree over whether to use dark magic, as Belle forbids Rumplestiltskin from using his powers for evil. Meanwhile, Hades secretly meets with Gaston in the Underworld and encourages him to seek revenge on Rumplestiltskin. As the heroes try to find a way to defeat Hades, Emma has a terrifying nightmare that she realizes is beginning to come true. And in flashbacks, Belle and Gaston meet for the first time, but their blossoming romance comes to a halt on the eve of the Ogre wars.

Guest stars include Meghan Ory as Ruby/Red and Eric Keenleyside as Sir Maurice/Moe.

"Once Upon a Time" Episode 17, "Her Handsome Hero," airs on Sunday, April 10 at 8:00 p.m. EDT on ABC. It will also be available the next day on abc.com, iTunes, Hulu, Amazon and more. Viewers who can't watch on TV can view it on a computer, tablet or smartphone, through ABC's live stream service. If all else fails, watch the episode live here, here and here.