Anyone who has wondered whatever happened to a high school sweetheart or the other members on their little league teams, likely will enjoy “Lost & Found,” a brisk series — a sort of “Cops” meets “Unsolved Mysteries”– that reunites individuals separated by time and terra.

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Though the subject has been done before — most often focusing on lost loves — the producers of this new series on cabler FX have gone to great lengths to nail down every detail to make sure the reunions run the gamut of emotions.

The first segment brings together members of a high school garage band whose personnel have scattered through the continent — but the producers go the extra mile and locate not only the individual band members but girlfriends, groupies and fans.

The result is more than five guys recalling tales of yesteryear, but an articulation of the impact the band and its perfs had on a contingent of folks.

The second seg — uniting pen pals who last corresponded 30 years ago — provides the expected yank on the heart strings. The premiere’s closing seg — about a 10-year-old first-time flier who loses his luggage but gets it back — uses an angle that’s interesting and unusual within the show’s premise.

Handheld cameras provide an urgency and spontaneity as they follow the participants. The well-researched segs offer nuances heretofore ignored by other programs delving into similar territory.