Q.E.D. -- Teen Detectives

When Frank and Joe Hardy arrive in Bridgeport, they set out to uncover the truth behind the recent tragedy that has changed their lives. In doing so, they stumble upon something much more sinister - something only the Hardy Boys can stop.

Identical twins Leni and Gina have secretly switched places for years. But when one sister disappears, both of their lives start to fall apart.

Narrates the events and cases encountered by Kaoru Utsumi, a rookie detective, and Manabu Yukawa, a university associate professor, while the two pair up to solve many mysterious cases.

Sherlock Holmes faces a sinister case risking friends' lives. American Amelia joins, seeking her father after her mother's murder. Despite differences, they solve a conspiracy and her mother's case.

When Lucy Albright and Stephen DeMarco meet at college, they are at that formative age when seemingly mundane choices lead the way to irrevocable consequences. They quickly fall into an addictive entanglement that will permanently alter not only their lives, but the lives of everyone around them.

A group of ordinary people who stumble onto a puzzle hiding just behind the veil of everyday life come to find that the mystery winds far deeper than they ever imagined.

Toronto’s only female private detective in the 1920s takes on the cases the police don’t want or can’t handle. From airplanes and booze running to American G-men, Communists and union busters, Frankie’s fearless sense of adventure gets her into all kinds of trouble, but she always manages to find her way out.

Barnaby Jones is a television detective series starring Buddy Ebsen and Lee Meriwether as father- and daughter-in-law who run a private detective firm in Los Angeles. The show ran on CBS from January 28, 1973 to April 3, 1980, beginning as a midseason replacement. William Conrad guest starred as Frank Cannon of Cannon on the first episode of Barnaby Jones, "Requiem for a Son" and the two series had a two-part crossover episode in 1975, "The Deadly Conspiracy".

Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.

A pair of lookalikes, one a former French aristocrat and the other an alcoholic English lawyer, fall in love with the same woman amidst the turmoil of the French Revolution.