It's Time Travel, Dearie.

Belle

Belle had never seen such a giant library before in her life. Rumple's library and the library she worked at here in Storybrooke didn't compare. And Rose said she could keep the beauty and the beast storybook.
"Oh no I couldn't possibly-"
"Please take it." Roses insisted, and Belle happily took it.

"Rumple?" Belle asks, walking into the shop. Quiet. No sounds, no reply. "Rumple??" She says again. Still nothing. Her heart started beating rapidly but she took a deep breath and took out her phone.
Dialed his number.
No answer.
Not even a ring.
Something was wrong.
Belle ran back to the TARDIS in a panic. She banged on the door. "Rose! Rose! Something's happened to Rumple." She bangs on the door. It opens and Belle runs inside. "Rumple wasn't it in the shop and his phone wait straight to voicemail." Belle talks so fast all her words start to jumple and her eyes are filling with tears.
Rose grabs Belle's arms.
"Belle Belle slow down! Tell us again what happened."
"After I left here, I went to go grab Rumple so we could go home. But he wasn't in is shop. So I called his cellphone- and it didn't even ring. It just flatlined."
"Does he have any enemies? People who would want him dead?"
Belle laughs. "Take a look at the list of everyone on the town. They all hate him. As Rumplestilitskin, he made many deals with them and caused many pain."
Rose frowns and nods, then looks at the Doctor.
"Alright. Let's go back to the shop and see if we can find any clues as to his disappearance."
Belle leads the way to the shop.
"Rumple?" She whispers, hoping that all this was a false alarm.
It wasn't.
"How many ways are there to get into the shop?"
"Two. One way in the front, and a door in the back."
"Rose go with Belle to the back, I'll check out things out here."
Rose nods and Belle goes with Rose.
Glass was shattered on the ground, and the spinning wheel was knocked over. Belle's hand flew to cover her mouth.
"Doctor!" Rose yells, calling him to the back. The Doctor pulls out that weird pen looking thing that glows and scans the area.
"What is that strange device? A wand?"
"Sonic screwdriver." Rose explains. Belle nods.
"Alright! A sign!" The doctor walks over the glass and throw the back door. Rose and Belle follow.
They're walking down the road, Belle saying hi to people who walked by.
They passed by Granny's and Belle talked to Ruby saying, "if you see anything, let me know." Ruby nods and the three continue on their way.
"Are you sure this is the right way?" Belle asks, once they begin to enter the forest. "Oh yes. Indeed. The screwdriver never lets me down!"
Rose rolls her eyes and looks at Belle.
"You okay?" She asks. Belle shrugs.
"Maybe heels wasn't such a good idea to wear." Belle laughs nervously.
Rose smiles softly at Belle.
"We'll find him Belle."
Belle sighs and nods. "I know."
"Hurry this way!" The Doctor yells. Belle looks at Rose then runs after the Doctor.
There's the well. Where she got married. She wants to smile but can't. She swallows. Then looks over the edge.
"Rumple? Rumple!" She yells, seeing him at the bottom, sitting in the water. She almost jumps in, but the doctor grabs her arm.
"If you jump you'll die. We'll get him out."
Belle looks over the edge again, wondering who could have done this. No one ever caught the Dark one.
Unless...
"The dagger." She whispers. "Rumple! Does someone have the dagger???" She yells down. She can't see that well, but she can slight see the nod of his head and can hear faintly "yes."
"What dagger?"
"The dagger that controls the Dark one. We can get him out, but someone has complete control over him. He could kill us- he doesn't have control."
The Doctor rubs his chin, in deep thought. "Can't he just say no?" He asks. Belle crosses her arms over her chest and narrows her eyes.
"Okay... No." The Doctor runs around. "Whoever wanted him down there clearly didn't plan on us finding him. So what we do- we get him out. Take him somewhere." Belle closes her eyes taking a deep breath.
She looks down over the edge of the well, stretching her hand out.
"Rumple we'll get you out of there."

The Doctor somehow manages to get the TARDIS to the bottom of the well and Belle runs out and to Rumple, bending down and kissing him. "Who did this?"
He didn't look himself, he looked strange. He stood up and Belle put her arm around him.
"Who has the dagger?" Belle whispers. Rumple looks up at Belle and says nothing.
Belle closes her eyes.
"The snow queen?" She asks. Rumple faintly nods.
"What did she do to you?"
The Doctor whispers something to Rose and Rose nods.
"The Doctor thinks he'll be safe in the TARDIS. Nothing can get past the doors."
Belle nods and rubs Rumple's hands between hers. She didn't know what happened to her husband, but she was going to find out.