Law enforcement agencies from across the U.S. have reached out to Jalopnik for help with car identifications since your input was "critical" to solving a hit-and-run last year, among others.

Today, we bring you an unusual story involving a pair of hit-and-runs in Philadelphia from last week.

What was unusual wasn't the crime itself, but the victims themselves. It's not a regular occurrence to hear about a 10-year-old getting struck by a hit-and-run driver on a Thursday afternoon and then her 14-year-old sister suffering that Saturday night. But, that's exactly what happened to Sarah and Kylee Givens on, respectively, March 7 and 9.

While the driver who struck 10-year-old Sarah has since turned himself in, Philadelphia Police are seeking the public's help to track down the hit-and-run driver who left Kylee with a ruptured spleen and broken ribs.

They released a video on Thursday afternoon hoping they could do just that. A portion of their press release reads:

The Philadelphia Police Department is seeking the public's assistance in identifying the suspect who hit a 14 year-old female in Wissinoming.

On March 9, 2013, at 8:30pm the complainant was at the intersection of Cheltenham and Torresdale Avenue when she was struck by a white vehicle that fled the scene. The vehicle was last seen traveling north on Torresdale Avenue then east on Van Kirk Street. The complainant received serious injuries as a result of this incident.

Vehicle Description: White two door, unknown make, possibly newer model with tinted windows.

Thoughts? Hunches? Let's talk it through and see if we can help them out.