[s4e20] Enervo Instant

It successfully introduces the cast of the spin-off (including Britt Robertson and Kevin Zegers ) and gives Simone Clark a strong "hero moment" that justifies her transition to the FBI.

The chemistry between Nathan Fillion and Niecy Nash-Betts remains the episode's greatest strength. Their shared "oldest rookie" status creates a unique bond, blending Nolan’s grounded approach with Simone’s intuitive, unconventional methods. [S4E20] Enervo

For a deeper look at fan reactions and detailed scoring, you can check these sources: It successfully introduces the cast of the spin-off

Browse critic and audience reviews for The Rookie Season 4 to see the overall season consensus. [S4E20] Enervo