Isaac Tash
Still waters isaac tash
Actor Steven McCarthy
Seen "Still Waters"
"Shades of Grey"
Gender Male
Status Living
Relationships Julia Ogden, close friend
Job Medical Doctor

Dr. Isaac Tash went to Bishop's University with Julia Ogden. In their school days they were good friends and they remained so afterwards, becoming confidants as well.


In his youth, Tash had been on the rowing team at the King's Rowing Club. Years later when Detective William Murdoch is investigating the murder of Richard Hartley at the club, Dr. Ogden arranges a meeting between Murdoch and Dr. Tash so that he could show Murdoch around the grounds. Tash leads Murdoch to Hell's Point, the site of a violent hazing ritual in Still Waters.

In Shades of Grey, it is revealed that after Julia Ogden had become pregnant out of wedlock and had to make the difficult choice, she asked Isaac to help her but he refused to break the law. So Julia went elsewhere for an abortion that nearly killed her and it was Isaac who saved her life. Murdoch believes that Dr. Tash was the father of Julia's unwanted child.

Quietly and discreetly, Dr. Tash in his practice will help women without judgment or questions because he does not want to see another woman go through what Julia did.


  • It will take nine seasons to finally reveal that Isaac Tash not only saved Julia's life, he mended her body so a doctor renowned for his work in fertility informs Julia that should be able to conceive (ep.1104) and with the assistance of experimental hormone therapy, she does (ep.1111).

Murdoch Mysteries Recurring Actors and Characters
Daniel Maslany as Detective WattsLachlan Murdoch as Henry HigginsArwen Humphreys as Margaret BrackenreidCharles Vandervaart as John BrackenreidDylan Neal as Jasper LinneyPeter Stebbings as James PendrickPeter Keleghan as Terrence MeyersErin Agostino as Nina BloomBea Santos as Louise CherrySiobhan Murphy as Ruth NewsomeMouna Traoré as Rebecca JamesJordan Johnson-Hinds as Nate DesmondKristian Bruun as Constable JacksonRichard Clarkin as Chief Constable DavisMichael Seater as James GilliesCyrus Lane as Roger NewsomeRothaford Gray as Alderman William Peyton HubbardGeorgina Reilly as Emily GraceNigel Bennett as former Chief Constable GilesMatthew Bennett as Allen CleggJayden Greig as Bobby BrackenreidDmitry Chepovetsky as Nikola TeslaGeraint Wyn Davies as Arthur Conan DoyleSean Harraher as Constable WorseleyTamara Hope as Edna Brooks (née Garrison)Giacomo Gianniotti as Leslie GarlandNicole Underhay as Margaret HaileJonathan Watton as Darcy GarlandSarah Gadon as Ruby OgdenPaul Amos as Dr. RobertsKate Greenhouse as Sally PendrickStephen McHattie as Harry MurdochAllan Royal as Chief Constable StocktonPaul Rhys as Dr. FrancisMaria Del Mar as Sarah PensellLisa Faulkner as Anna FulfordSarah Allen as Enid JonesSarah Wilson as Tess MoffattSteven McCarthy as Isaac Tash