Skip to content
personpersonKenneth R. KratzKenneth R. KratzCalumet County district attorney who led the prosecutions of Steven Avery and Brendan Dassey.← All People
ProsecutionCalumet County District Attorney's Office

Kenneth R. Kratz

Calumet County district attorney who led the prosecutions of Steven Avery and Brendan Dassey.

6,682 lines·177 proceedings·1 mention·2 trials

About

Special prosecutor Kenneth R. Kratz presented the State’s case in the 2007 trials of Steven Avery and Brendan Dassey. In Avery’s trial, he developed the October 31 appointment sequence, discovery of Teresa Halbach’s RAV4, property searches, the bedroom key, garage bullet fragments, fire evidence, and telephone records. His closing connected the vehicle, blood and DNA comparisons, burn-area evidence, and firearm evidence to the State’s requested verdicts while contesting the defense’s planting theory. The court ordered a correction after finding his explanation of the presumption of innocence technically incorrect, and it excluded an earlier-encounter account he offered through a witness.

In Dassey’s trial, Kratz opened with the State’s allegations about Dassey’s involvement, his recorded statements, and evidence the State said corroborated them. He challenged defense evidence about Dassey’s abilities and suggestibility, cross-examined defense psychologist Robert Gordon, and presented rebuttal testimony from psychologist James Armentrout within limits set by the court. He also opposed a motion to dismiss the mutilation count; the court found sufficient corroboration to deny that motion at that stage.

Trial Record (177)

AverySteven AveryFeb 12, 2007 – Mar 18, 2007

Special prosecutor Kenneth R. Kratz presented the State's case in Steven Avery's 2007 trial, examining witnesses about Halbach's appointments, the RAV4, searches, fire evidence, and phone records. His closing linked the physical evidence to the State's requested verdicts and challenged the defense's planting theory.

Day 1

ProceduralRuling on Presumption-of-Innocence Correction1highlightMentioned1line spoken

Summary

The court agreed that the State's opening had misstated the presumption of innocence and ordered a repeat instruction before the defense opening.

Mentioned in this proceeding.

Highlights (1)

rulingAfter Strang requested a correction, the court agreed that Kratz's description of the presumption of innocence was technically incorrect and said it would repeat the instruction before the defense opening.Open in transcript →

Day 2

Day 3

Day 4

Day 5

Day 6

Day 7

Day 8

Day 9

Day 10

Day 12

Day 13

Day 14

Day 17

Day 18

Day 19

Day 20

Day 21

Day 23

Day 24

RebuttalState rebuttal closing argument by Kenneth KratzKenneth R. Kratz1highlight20lines spoken

Summary

Kratz rebutted the defense's planting theory and forensic challenges; after a defense objection, the court reminded jurors that arguments are not evidence.

Highlights (1)

otherKratz argues that the cabinet photographs and Colborn's account offer a plausible explanation for the key's discovery, then urges jurors to consider the other evidence even if they set the key aside.Open in transcript →

Day 26

Day 27

DasseyBrendan DasseyApr 16, 2007 – Apr 25, 2007

In Brendan Dassey's 2007 trial, special prosecutor Kenneth R. Kratz presented the State's account of Dassey's recorded statements and the investigative evidence offered to support them. He later challenged defense testimony about Dassey's suggestibility through cross-examination and a psychologist's rebuttal testimony.

Day 1

Day 2

Day 3

Day 4

Day 6

CrossKris Schoenenberger-Gross — CrossKris Schoenenberger-GrossKenneth R. Kratz1highlight69lines spoken

Summary

Kratz tested what Brendan's school records showed about his abilities and suggestibility; Schoenenberger-Gross described average-range scores but limited her conclusions about memory and influence.

Highlights (1)

testimony highlightShe gave a thinking-ability score of 93 and, using Exhibit 217, identified 2002 math reasoning and calculation scores of 102 and 100. She corrected Kratz's characterization of 102 as above average, calling it solidly average.Open in transcript →

Day 7

Day 8

CrossRobert H. Gordon — CrossRobert H. GordonKenneth R. Kratz1highlight308lines spoken

Summary

Kratz tested Gordon's suggestibility opinion against his reports, school records, interview review, and test methods. Gordon acknowledged omissions and a possible inventory error but maintained his opinion; the court also directed a review of requested notes.

Highlights (1)

testimony highlightKratz questioned Gordon about statements attributed to Brendan before and after the March 1 interview. Gordon called several statements relevant to consider but said he could not determine their accuracy from those questions; he maintained his suggestibility opinion.Open in transcript →
ProceduralOffer of Proof and Ruling on Armentrout’s Rebuttal Testimony1highlight17lines spoken

Summary

The court allowed Armentrout's expert rebuttal on Gordon's tests and opinions, subject to foundation, but excluded a proposed debate over suggestibility as a specialty.

Highlights (1)

procedural actionKratz offered Armentrout to respond to Gordon's suggestibility testimony; Fremgen challenged Armentrout's relevant expertise and opposed testimony about whether suggestibility was a specialty.Open in transcript →

Day 9