Warning: This article contains pretty major Brooklyn Nine-Nine spoilers for an episode which hasn't aired yet in the UK. You've been warned!

Brooklyn Nine-Nine has bagged itself another huge guest star in the form of Cruel Intentions actor Ryan Phillippe.

The actor – who currently stars on Shooter – will feature in Brooklyn Nine-Nine's fourth season finale as Milton, a potential love interest for Gina, according to TV Line.

Fox

But it seems not everybody's going to be thrilled by Milton's arrival – Gina's former flame and step-brother Boyle will not be a fan.

Phillippe is one in a string of major celebrity cameos the FOX sitcom has managed to pull in since its first season.

This is the End star Craig Robinson plays the recurring role of the Pontiac Bandit, Adam Sandler made a very brief cameo as himself for one episode – while former Desperate Housewives star Eva Longoria has appeared several times as Jake's love interest Sophia.

Netflix

It was also recently announced that Castle and Modern Family actor Nathan Fillion will guest star in the series, playing a TV actor from a police procedural (how very meta) who reckons he can help the Nine-Nine solve a case.

Brooklyn Nine-Nine returned to screens last week after a short hiatus, following a midseason finale cliffhanger where Gina (Chelsea Peretti) was hit by a bus.

Fox

However, last week's episode revealed Gina survived the crash but has been injured, meaning she'll need to take it easy and will be seen sitting down for the rest of the season.

We'll miss Gina's dancing so much.

Brooklyn Nine-Nine airs on FOX in the US and E4 in the UK.

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