"Ms. Fisher's Modern Murder Mysteries" was canceled primarily due to low viewership ratings. Despite a dedicated fan base and positive critical reception, the series struggled to attract a larger audience, leading the network to decide against renewing it for a second season. Additionally, the production faced challenges, including the impact of the COVID-19 pandemic, which affected filming schedules and budgets. Ultimately, these factors contributed to the show's cancellation after its first season.

"Miss Fisher's Murder Mysteries" has a total of 3 seasons. The show, which is based on the novels by Kerry Greenwood, originally aired from 2012 to 2015 and features the adventures of the glamorous private detective Phryne Fisher in 1920s Melbourne. Additionally, a sequel film titled "Miss Fisher and the Crypt of Tears" was released in 2020, and there is a spin-off series called "Ms. Fisher's Modern Murder Mysteries" that premiered in 2019, focusing on Phryne's niece.

The spin-off to "Miss Fisher's Murder Mysteries" is titled "Ms. Fisher's Modern Murder Mysteries." It premiered in 2019 and follows the adventures of Peregrine Fisher, the niece of the original character, Phryne Fisher. Set in the 1960s, the series features Peregrine as she takes on the role of a detective, solving crimes in a modern context while embodying her aunt's spirit of independence and cleverness.

As of October 2023, there is no Season 4 of "Miss Fisher's Murder Mysteries." The original series, which aired from 2012 to 2015, consists of three seasons. However, a spin-off film titled "Miss Fisher and the Crypt of Tears" was released in 2020, and a new series titled "Ms. Fisher's Modern Murder Mysteries" premiered in 2019, featuring a different character set in the same universe. Fans continue to hope for more content related to the beloved detective, Phryne Fisher.