Gabriel Knight: Sins of the Fathers is a 1993 point-and-click adventure game, created by Jane Jensen, developed and published by Sierra On-Line, and released for MS-DOS, Macintosh, and Windows on December 17, 1993.

The game's story, featuring the voices of Tim Curry, Leah Remini, and Mark Hamill in the CD-ROM version, focuses on Gabriel Knight, a struggling novelist, whose decision to use a spate of recent murders around New Orleans as material for a new novel, leads him into a world of voodoo magic and the truth about his family's past as supernatural fighters.

A remake of the game to mark its 20th anniversary, Gabriel Knight: Sins of the Fathers 20th Anniversary Edition, was released in 2014 for Windows, Mac, iPad, and Android, featuring a remastering of the graphics and music, along with a new voice cast and minor changes to the arrangement of story events Sins of the Fathers is a point-and-click adventure game, played from a third-person perspective.

In tune with Sierra games of the time, a running score is used to keep check on actions, both required and optional, that players have completed (i.e. talking about a key subject with a character).

Sins of the Fathers takes place within a world where the occult and the supernatural exist throughout human history  – such as ghosts, cultists and demons.

To combat those who use such forces for evil against humanity are the "Schattenjägers"  – a German translation of the words "Shadow Hunters"  – who take it upon themselves to defend the innocent from such beings; their origins, however, are shrouded in mystery.

Gabriel Knight, a struggling horror novelist who owns a book store in New Orleans, is compelled by strange nightmares to investigate a spate of killings across the city, dubbed the "Voodoo Murders", that could provide him material for a new novel.

At the same time, his shop assistant Grace Nakimura, who aids him with research, fields calls for Gabriel from a man named Wolfgang Ritter, who claims to be family.

Seeking answers, he visits his grandmother and learns from her that his grandfather, Harrison Knight, was a German immigrant called Heinz Ritter, revealing Wolfgang to be Gabriel's great-uncle.

When he reads it, he discovers an entry concerning his ancestor Gunter Ritter, who executed a voodoo practitioner named Tetelo, after she betrayed his love for her by stealing a family talisman and using it to commit several murders.

He is shocked to discover the cartel is led by Malia Gedde, a mysterious socialite whom Gabriel became infatuated with upon meeting, and to find she is possessed by the spirit of Tetelo, who recognizes him as Gunter's descendant.

After narrowly escaping death, with Grace's help, Gabriel decides to leave the city for his own safety and look into his family's background at Schloss Ritter.

After sending his great-uncle's body back to Germany for burial, Gabriel returns to New Orleans, finding the city has descended into chaos in the last few days.

The programmers for Gabriel Knight: Sins of the Father were Bob Andrews, Tom DeSalvo, Jerry Shaw, Sean Mooney, and Greg Tomko-Pavia.

[8] Gabriel Knight: Sins of the Fathers was first released in North America by Sierra On-Line cross-format as both a single CD-ROM disc and as a set of eleven 3.5" floppy disks on December 17, 1993.

The novel is a straightforward adaptation of the events of the game, an approach which Jane Jensen decided, in retrospect, was not the most successful way of introducing Gabriel Knight to a literary audience.

As part of her 2012 Kickstarter campaign to fund a new adventure game, Jensen offered both Gabriel Knight novels as ebooks to backers who pledge $50 or more.

[23] In March 1994, the magazine's Charles Ardai stated that Gabriel Knight justified being called an interactive movie, with "audio and video that outshines any cartoon and a story that could scare the bejeebers out of Stephen King ... one of the rare titles that lives up to the promise of the overhyped tag 'multimedia'".

The editors wrote that the former "introduced elements from graphic novels ... nightmarish dream sequences and a dark human story that reads and plays extremely well".

The editors had expected to give the award to someone portraying a specific character but were "totally overwhelmed" by Capers as the narrator, stating that "her performance alone makes it worthwhile to purchase the CD version".

[40] Series creator Jane Jensen created a 3-part comic based on the 20th Anniversary Edition video game, which took place six months after his last quest, "The Temptation".