“Law & Order: Organized Crime” will also have its season premiere immediately after the two-hour event.

Ralph Bavaro/NBC via Getty; Peter Kramer/NBC via Getty

Law & Orderworlds are colliding once more.

NBC announced that the flagshipLaw & Orderseries andLaw & Order: Special Victims Unitwill cross over on April 17.

LAW & ORDER – “The Meaning Of Life” Episode 24004 – Pictured: Tony Goldwyn as DA Nicholas Baxter, LAW & ORDER: SPECIAL VICTIMS UNIT – “The Grid Plan” Episode 26014 – Pictured: Mariska Hargitay as Capt. Olivia Benson

Tony Goldwyn on ‘Law & Order’; Mariska Hargitay on ‘Law & Order: Special Victims Unit’.Credit:Ralph Bavaro/NBC via Getty; Peter Kramer/NBC via Getty

Law & Orderis currently in the midst of its 24th season.

LAW & ORDER: SPECIAL VICTIMS UNIT – “The Punch List” Episode 25003 – Pictured: Mariska Hargitay as Captain Olivia Benson

Mariska Hargitay on ‘Law & Order: Special Victims Unit’.Peter Kramer/NBC via Getty