1.15 Out of Time (The Flash 2014)

Plot Summary
On their date, Barry and Linda run into Iris and Eddie at the bowling alley. While Barry and Iris are okay with a double date, Eddie and Linda aren't as they see Barry and Iris are having a blast together. Then, an call about a case at the morgue interrupts them. Barry and Eddie leave their dates to get to their work.

Over at the morgue, Barry, Joe, and Eddie learn the killer is Mark who seeing revenge against Joe for killing his brother Clyde. While Cisco works on making a device that will neutralize Mark's powers, Barry asks Joe for advice about him and Iris's relationship. During the car ride together, they are caught in an unusual storm and realize they are being tracked by Mark.