Love is often in the air on Rookie Blue, but something even more dangerous surfaces on this Thursday's "Monster." A virus, caused by a man who collapses in custody.

As a result, the force is quarantined.

Meanwhile, a blue-dyed man is apprehended and suspected of bank-robbery, but the officers have difficulty tracking down his violent accomplice. Also, Dov dates a bomb technician! Check out the Canadian promo for this episode now: