Jackson and Greta are my original characters, but I don't own CSI.

Thank you csinycastle85 and Sitting Ducki for your reviews! Hope you enjoy this chapter!

Jackson couldn't wait to get out of school for Christmas break. He wanted to go home and see his grandparents, Great Greta, and his baby sister. Greg, Morgan and Greta joined him and his class for their holiday party, and Jackson enjoyed showing Greta everything in his classroom and letting his friends play with her.

When they arrived home, Jackson was still talking about everything he wanted to show Greta and how he loved Christmas. He didn't see the people standing on the porch until Morgan and Greg smiled and pointed to them. Jackson gasped softly and smiled. He couldn't open his car door fast enough.

"Nana! Papa! Great Greta!"

Jackson jumped out of the car and rushed up to hug his grandparents. They happily hugged their sweet grandson.

"Merry Christmas, my darling," Great Greta said as she hugged her great-grandson.

Morgan got the happy baby out of her car seat as Greg hugged his family. Greta happily babbled as Morgan pointed to her grandparents. "Look who's here, honey!"

Marina and Great Greta gasped softly when they saw the baby. Greta smiled as Marina took her.

"Look at you, sweet girl," Daniel said as Greta smiled at her grandparents.

"She's gotten so big!" Marina said. Baby Greta smiled curiously as her grandparents and great-grandmother doted on her.

Greg took Greta from Marina and set her down. "We've got something to show you," he said when Marina asked what he was doing. The grandparents gasped softly as the baby girl took a few wobbly steps with her father's help. Great Greta gasped softly and said, "Look at you, my Greta!"

"She's started walking," Jackson proudly said. "And she likes to hear the song you sing to me, nana!"

"Aw," Marina said as she hugged Greta close. "Maybe we can both sing it to her."

"Yeah!"

Jackson and Greta couldn't spend enough time with their grandparents. Jackson loved telling them all about school and his friends and how Greta was walking and investigating everything.

"My goodness," Marina said. "It sounds like you two are mini-CSIs."

Jackson giggled as Greta babbled away like she was saying yes!

"And guess what?" Jackson said. "Uncle Nicky and Aunt Sara and Uncle Gil are going to come over for Christmas! Uncle Nicky said he's gonna help me teach Greta to play football, but I told him she has to walk a little better first."

"Maybe she can be a cheerleader," Daniel said. Greta cooed to her grandfather.

"Are you ready for Christmas?" Great Greta asked Jackson.

"Yeah! We saw Santa yesterday! I think Greta was kind of scared, but I told her it's okay."

Marina and Daniel smiled at their grandson. "My goodness," Marina said.

"Yeah," Morgan said as she sat down in the living room with everyone. "Greta was about to cry, but Jackson calmed her down."

"He's a great brother," Greg added. Jackson beamed at his father.

Morgan and Greg went to work and Jackson and Greta spent the night with their grandparents and great-grandmother. Jackson was so happy, he didn't want to go to bed. He helped Marina get Greta ready for bed and they sang You Are My Sunshine for the sleepy baby. Greta cooed and reached for her brother as Marina put her in her crib.

"It's okay," Jackson assured her. Greta smiled up at her family. Marina, Daniel and Great Greta all kissed the sweet baby girl and told her goodnight.

Jackson loved spending time with his grandparents and helping put Greta to bed. He rubbed Greta's tummy as she closed her eyes and drifted off to sleep.

"Sleep tight, Greta," Jackson whispered. "We love you!"

TBC...