It's (almost) the end of an era!

For the past eight seasons, Castle stars Stana Katic and Tamala Jones have shined on-screen together as BFFs Kate Beckett and Lanie Parish, respectively, and now it's time to watch one of their final scenes together on the ABC drama.

ETonline has snagged an exclusive sneak peek of Monday's penultimate episode of season eight, and it features our two leading ladies doing what they do best: being brilliant and solving crimes.

MORE: Nathan Fillion Reacts to Stana Katic's Shocking 'Castle' Exit: 'She Will Be Missed'

Last month fans were shocked to learn that both Katic and Jones, who have starred on Castle since the series debuted in 2009, will not be returning to the crime drama if there is indeed a ninth season.

"To the fans: thank you for your support. I love you," Katic tweeted to her fans following the news of her departure.

See more about the surprising shake-up in the video below and catch the final two episodes of Castle Mondays at 10 p.m. ET/PT on ABC.