The following article has heavy spoilers for Task.HBO miniseries Task comes to an end next Sunday with Episode 7. The remaining members of the task force trying to catch The Dark Hearts now face the horrific truth that one of them is actually working for the bad guys. When the credits rolled last Sunday, Tom Brandis and Aleah Clinton silently swore revenge after they found out that Anthony Grasso is an informant for the drug-dealing gang, and he may have had something to do with Lizzie's death. It is a pivotal shift in the plot that will see the series' final episode turn into a revenge story.