It had been about six months since Barry had disappeared from Central City. In that time Wally had become the Flash and Jesse had become Jesse Quick. Cisco had learned more about his powers and he became the hero known as Vibe. Ralph and Frost/ Caitlin got together after Ralph helped her and Frost gain a handle on their powers.
One day when Cisco and Caitlin walked into the Cortex they saw a man standing in the middle of it. "Why does this keep happening?!" Cisco complained as he raised his hands getting ready for a vibe blast, "Whoever you are, turn around slowly."
The man turned around revealing that it was Oliver Queen, "Oh Oliver you can't just scare us like that."
"Sorry to show up unannounced but I haven't heard from Barry in a long time. I wanted to check up on him after his father was killed."
"Oh, Oliver I forgot we didn't tell you," Caitlin said
"What happened?!" Oliver said in a low voice
"Hah, that's like your 'Arrow' voice." Cisco laughed and Oliver just glared, "So I'll just tell you, So after we defeated Zoom we all went back to Joe's to celebrate but Barry sat on the steps the whole time. When Iris went to check up on him he was gone, no trace."
"Did you see anything that could lead to where he had gone."
"All he did was leave a note saying that he was leaving for a while and not to try to find him."
"Other than the note, anything that might suggest to where he is, no matter how seemingly insignificant, tell me. I will call Felicity."
"Wait are you guys serious?!" Caitlin complained, "Barry's father was just murdered in front of him we should give him his space."
"He shouldn't be alone to deal with that grief." Oliver said after he told Felicity, "Also what if we need Barry."
"You mean if we need Barry even after we have 2 speedsters, one multidimensional meta-human, One Elongated man, and one Frost?"
"Just find him." Oliver growled, "Now what did you find on the street where Barry left when you first went over it?"
"Well nothing too out of the ordinary except there were no traces of dark matter or speed force in the time frame where Barry was missing. He could have walked but that would have taken too long, we did find treading consistent with that with Yamaha's brand of street bikes."
"Does Barry own a motorcycle?"
"Not that we know of."
"What about his phone?"
"We tried that, it led us to a random house in Central City the phone was out front just lying there."
"Who owns the house?"
"The house was purchased by a one 'Dinah Lance'"
"Cisco what was the model of the motorcycle?"
"Based on treading and weight of the bike had to be putting on to make the tread marks they were more specific with a Yamaha FJR1300ES, why?"
"I have to go." Oliver quickly said
"Wait what do you mean?" Caitlin and Cisco gave a confused look as Oliver hurried out of Star Labs. Oliver left Star Labs and got on his motorcycle headed to Dinah's house. When he got there he noticed a car parked out in front. He walked up the steps and knocked on the door. When it opened he saw Dinah, "Oliver what a wonderful surprise! What are you doing here in Central City?"
"Well I was in town and I thought I would stop by. See how you were holding up."
"It has been a rough few months." She said as she invited him in and walked through the house, "Would you like some tea?"
"Yes please." He said as he followed her into the kitchen, "Have you seen Sara recently?"
"Not recently. She stopped by about a year ago." She turned and handed Oliver a cup of tea, "Although I did notice when I was leaving for my trip I saw Sara's motorcycle parked across the street. It must have been someone else's."
"Thank you for the tea, Ms. Lance. But I must be on my way."
"Oh are you sure," she said but when she turned around he was already gone.