0:00 The giggle started at exactly seven fifty-nine PM.0:04 Leo was tucked into bed, his breathing slow and even, almost asleep.0:10 And then he heard it.0:12 Tee-hee-hee.0:13 It wasn't a scary sound.0:16 It wasn't a creak or a groan or a bump in the night.0:20 It was a happy sound.0:22 A secret, bubbly little laugh, coming from somewhere inside the house.0:29 Leo’s eyes popped open in the dark.0:32 He held his breath.0:34 He heard it again.0:35 Hee-hee-hee-hee.0:37 It sounded like someone was being tickled.0:40 But...0:41 who?0:41 Mom and Dad were downstairs watching a movie.0:45 And they were definitely not giggling.0:49 This was a mystery.0:51 A top-secret, late-night, under-the-covers kind of mystery.0:56 Leo slipped out of his bed, his bare feet silent on the wooden floor.1:02 He tiptoed to his door and cracked it open just enough to peek.1:08 The hallway was dark, with just a little bit of light coming up the stairs.1:15 GIGGLE.1:16 It was louder out here.1:18 It seemed to be coming from the end of the hall.1:22 Leo crept forward, one step at a time.1:26 The floorboards made a little groaning sound.1:30 Ooooh, spooky.1:31 Not really.1:32 Leo wasn't scared.1:34 He was curious.1:35 The sound led him past the bathroom, past his parents' room, all the way to the very end of the hall.1:44 And there he saw it.1:46 The little string that opened the door to the attic...1:51 was swinging.1:52 Just a tiny bit.1:54 Back and forth.1:55 Back and forth.1:56 And the giggling was coming from… up there.2:00 Alright.2:01 This was the moment.2:03 The moment a great detective decides to be brave.2:07 Leo reached up, grabbed the string, and pulled.2:12 The old wooden stairs unfolded with a long, slow groooooan.2:17 He put one foot on the first step.2:20 It held.2:21 He climbed.2:22 Up, up, up into the dusty, shadowy attic.2:26 It smelled like old books and forgotten sweaters.2:30 He took another step, and then he heard it, closer than ever.2:36 A happy little burst of laughter, right in front of him.2:41 He flicked on the little flashlight he'd grabbed from his nightstand.2:47 And the beam of light landed on an old travel trunk.2:52 Sitting on top of it was a little girl.2:55 Except… Leo could see the trunk right through her.3:00 She was shimmery and see-through, like a soap bubble in the sun.3:06 And she was tickling her own shimmery, see-through feet with a long, white, see-through feather.3:15 She looked up, her eyes wide.3:17 The giggling stopped.3:19 For a second, they just stared at each other.3:23 The boy holding a flashlight, and the ghost-girl holding a feather.3:29 She wasn't scary at all.3:32 She just looked… lonely.3:34 Then, she smiled a wobbly, see-through smile.3:38 She held out the ghostly feather to him.3:42 Leo reached for it, but his hand went right through.3:46 He tried again.3:48 Poof.3:48 Right through.3:49 He looked at his hand, then at her.3:53 And a little giggle escaped his own lips.3:56 Her smile grew wider.3:58 And she started to giggle, too.4:01 The old, spooky attic wasn't spooky anymore.4:05 It was filled with the sound of two friends, sharing a secret laugh in the dark.