Since the debut of “Boston Blue,” the enigma surrounding Judge Ben Silver’s murder has loomed large. In the pivotal Episode 10, titled “Hard Truths,” the mystery unravels, revealing the truth, though not without significant turmoil for the Silver family.

The mastermind behind the judge’s murder is revealed to be the unscrupulous businessman David Laughlin, portrayed by Marc Kudisch. Laughlin, whose illicit activities were on the brink of exposure due to a case Judge Ben was handling, orchestrated the assassination. He enlisted Doyle O’Keefe, a member of the notorious Red Saints gang played by Brendan McMurtry-Howlett, to carry out the hit.

This revelation means that Ronan Flaherty, portrayed by Jack Murray, who had been wrongfully jailed for the crime, is in fact innocent. O’Keefe confides in Jonah, Judge Ben’s son and a novice police officer played by Marcus Scribner, that the murder was strictly business, not personal. Although this truth shatters Jonah, it also sets him on a path toward healing.

In a shocking twist from Episode 9, Jonah finds himself accused of killing Flaherty after his release, allegedly as retribution for his father’s murder. At the start of “Hard Truths,” Jonah is suspended while the incident is scrutinized. Jonah’s partner, Sean Reagan, played by Mika Amonsen, attempts to protect him by claiming Jonah acted in self-defense, a lie that angers Sean’s father, Danny Reagan, portrayed by Donnie Wahlberg.

In a shockingly dark twist back in Episode 9, Jonah is accused of killing a newly-released Flaherty in revenge for his dad’s death. At the beginning of “Hard Truths,” Jonah is put on administrative leave while the crime is investigated. Jonah’s partner, Sean Reagan (Mika Amonsen), tries to say he was there and that Jonah shot Ronan in self-defense, an obvious falsehood that infuriates Sean’s dad, Danny Reagan (Donnie Wahlberg).

The rest of the team gets to work solving the case. They get their big break when video of Judge Ben’s shooting makes it onto the internet. It seems that the shooter was left-handed — and Ronan Flaherty was not. This inspires Jonah to confess that a mystery assailant shot Flaherty. The team manages to figure out that their perp is Doyle O’Keefe, thanks to a combination of evidence culled from stakeouts and a missing document of Ben’s that Mae Silver (Gloria Reuben) hunts up.

In more pleasant news for the Reagan and Silver family trees, Danny officially becomes a member of the Boston Police Department and gets his new badge during this episode. It’s a round of fresh beginnings for the whole gang, but don’t expect the mean streets of Boston to get any kinder for Danny and his new friends.