The Date Convention I have been using isn’t that accurate as it was when there only four shows and were starting at the same time.  This week, we get to see Lucifer act as a groupie for a superstar, The Legends visit one of the first big superstars, The Flash swaps out with Iris so she can be super, Black Lightning deals with his family and their super powers, and we get a preview of the new super show Krypton.  (Arrow and Supergirl are still taking a break from being super.)

[All synopses (and titles) from below the cut.  (If a show’s synopsis is a spoiler to you, do not click More…)]

Lucifer – S03E17 – Let Pinhead Sing! – When a superstar singer’s life is threatened, the team is thrust into the world of big-ticket stadium shows, crazed fans and divas, giving Lucifer a run for his money. Meanwhile, Charlotte tries to help Linda and Maze repair their friendship.

Supergirl – S03E14 – Schott Through the Heart – Returning on April 16, 2018.

DC’s Legends of Tomorrow – S03E14 – Amazing Grace – When the Legends learn that a mysterious tragedy destroyed Memphis in 1954, thus eradicating the birthplace of rock and roll, they embark on their most important mission – to save music. Nate is excited to show Amaya why music is important to him and he is surprised it leads to a rock legend as well as the sixth and final totem, the Death Totem. Meanwhile, Zari helps their newest member try to adjust to the team.

The Flash – S04E16 – Run, Iris, Run – Team Flash confront a new bus meta, Matthew aka Melting Pot. He has the ability to swap people’s DNA, so during a battle with Team Flash, he transfers Barry’s super speed to Iris. Now, with a new threat unleashed on Central City, Barry must act as the team leader while Iris takes on the mantle of superhero speedster in order to defeat their new foe.

Black Lightning – S01E08 – Revelations – Black Lightning works with Anissa to help find information to clear Black Lightning’s name. Jennifer begins interning for Lynn. Meanwhile, Gambi finds himself in a precarious situation.

Arrow – S06E16 – The Thanatos Guild – (Airing March 29, 2018) – Nyssa Al Ghul returns to Star City to warn Thea that a group of renegade League of Assassins members are planning to attack her. This group, led by Athena, is intent on finding a mysterious box that Malcolm left behind and will stop at nothing to get it. Nyssa helps Oliver come to a life-changing realization.

Krypton – S01E00 – Krypton: The Making of a Legend – No synopsis, but there was another DC show starting on Syfy.