![](https://kcet.brightspotcdn.com/dims4/default/7016cce/2147483647/strip/true/crop/1920x1080+0+0/resize/1248x702!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FTWOs45p-asset-mezzanine-16x9-pcCxqsQ.jpg)
Access to this video is a benefit for members through
Back to Show
Watch Preview
Professor T (UK)
A Little Drop of Poison
Season 3
Episode 4
Out of prison the Professor is desperate to get back to his work at the university and with the police. Detectives are struggling to find a pattern to link a series of unexplained deaths across Cambridgeshire and need the Professor’s help with the investigation before more people die.
Support Provided By
Season
![Season 3](https://kcet.brightspotcdn.com/dims4/default/5ffab95/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2F6Jt6p2l-asset-mezzanine-16x9-ah6WXpl.jpg)
Unlock with PBS Passport
53:17
A woman is found dead at the scene of a car crash, but the accident didn’t kill her.
![The Conference](https://kcet.brightspotcdn.com/dims4/default/ff09e43/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2F71lC5ih-asset-mezzanine-16x9-sxsBE0Y.jpg)
Unlock with PBS Passport
50:12
The Professor must prove his innocence to regain his reputation.
![Truth and Justice](https://kcet.brightspotcdn.com/dims4/default/661d617/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FSfSvNf0-asset-mezzanine-16x9-E4jstut.jpg)
52:13
Professor T is up in court and he must decide whether to save himself or his former lover.
![The Perfect Picture](https://kcet.brightspotcdn.com/dims4/default/5076850/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FCwfZXut-asset-mezzanine-16x9-BE3H8aC.jpg)
50:02
A bride is found dead on her wedding night floating in the hotel swimming pool.
![Heir to the Throne](https://kcet.brightspotcdn.com/dims4/default/cafe4d0/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FYz1j8RD-asset-mezzanine-16x9-MkJA0cw.jpg)
Unlock with PBS Passport
50:56
Professor T is banged up in prison. Dan and Lisa try to distract him with a murder case.
![Swansong](https://kcet.brightspotcdn.com/dims4/default/a9c5ad7/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FENsj8ct-asset-mezzanine-16x9-x3RxgWE.jpg)
Unlock with PBS Passport
52:27
The CID team blunder into a Drugs Squad operation that might implicate their colleague.
![The Trial](https://kcet.brightspotcdn.com/dims4/default/1ad2314/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FWM5uT4D-asset-mezzanine-16x9-Wg6Bs9D.jpg)
Unlock with PBS Passport
50:38
A caretaker is accused of shooting dead his rich employer. Is it an open and shut case?
![DNA of a Murderer](https://kcet.brightspotcdn.com/dims4/default/5aaf3c2/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FU7WcEbJ-asset-mezzanine-16x9-9GY3L1X.jpg)
Unlock with PBS Passport
49:53
An artisan baker is found dead. Is it a case of revenge or is the killer closer to home?
![The Family](https://kcet.brightspotcdn.com/dims4/default/e7eb0ed/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FuPXbQqS-asset-mezzanine-16x9-liBA4Ut.jpg)
Unlock with PBS Passport
50:23
Professor T faces a macabre puzzle when a family is found dead in a grisly tableau.
![The Mask Murders](https://kcet.brightspotcdn.com/dims4/default/ddb990a/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FwaIz3A6-asset-mezzanine-16x9-aL6v0qM.jpg)
Unlock with PBS Passport
50:05
When a prominent couple are found dead, is it a copycat crime or was the wrong man tried?
![Ring of Fire](https://kcet.brightspotcdn.com/dims4/default/03675d3/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FtreOgl9-asset-mezzanine-16x9-BbIuU0Q.jpg)
Unlock with PBS Passport
50:26
Professor T and the police race to find a sadistic arsonist before they strike again.
![The Dutiful Child](https://kcet.brightspotcdn.com/dims4/default/08ee153/2147483647/strip/true/crop/1920x1080+0+0/resize/768x432!/quality/90/?url=https%3A%2F%2Fimage.pbs.org%2Fvideo-assets%2FPjkM5sn-asset-mezzanine-16x9-KgE6ijV.jpg)
Unlock with PBS Passport
46:10
It's Professor T's birthday and with it comes a haunting childhood memory.