Murder Liar Puzzle

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Note: I just decided to steal names from the Murder Riddles by Segaco and Something_Smart (and move them around), but this is not like those at all -- this puzzle is pure logic. Therefore it is likely to be solved in one guess and somewhat quickly.
This also follows the long-standing tradition that Purple Declaration is always true unless said by a culprit (and in this case, also a bribed witness).

Anyway, what we have here is a murder. It does not matter who was murdered or how. It only matters whodunnit.
There are

five main suspects

and

eight witnesses

. However, some of the witnesses have been

bribed

by the killers to lie in order to further confuse the situation.

A guilty suspect's

Purple Declaration

will ALWAYS be false, as will a bribed witness's.

Also,

exactly two of the suspects are guilty

.

Suspects:

• Orange Duckling
• Paul Turner
• Quinn Hazard
• Ruby Holland
• Sarah McCall

Witnesses:

• Alder Hutch
• Brian Tooley
• Catherine Luda
• Dave Jones
• Edward Sands
• Fran Werner
• George Werner
• Henry Werner

Statements

Suspects

Orange

: "I know that

Ruby and Sarah are both definitely innocent.

I guess that means it was Paul and Quinn."

Paul

: "I can detect a lie from a mile away.

Orange is lying

."

Quinn

: "

Four witnesses were bribed

. I can say how I got this number if you want, but I'm sure of it."

Ruby

: "

Brian definitely got bribed

. I saw it myself."

Sarah

: "

Either Quinn or Ruby is lying

, but I am not sure which. Maybe both are."

Witnesses

Alder

: "I think I can contribute some information...

Either Dave or Edward got bribed

, perhaps both."

Brian

: "I remember this much...

Either Ruby or Sarah is innocent -- but not both of them

."

Catherine

: "I am not as good at lie-detecting as Paul claims, but

at least one of those last two (Alder and Brian) lied

."

Dave

: "Well, I know that

Alder is telling the truth

. He never takes bribes."

Edward

: "

The culprit team is not Paul+Quinn

."

Fran

: "

If Paul really is innocent, then the murder happened in the morning (6:00-11:59)

."

George

: "Well, I remember that

the murder happened in the evening

."

Henry

: "

At least two of the Werners have been bribed

."

In order to solve the puzzle, you must provide as complete of a description as possible. That means which suspects are guilty

and

which witnesses are telling the truth, at least as much as that information can be logically determined.

Clarifications

When someone says "Either A or B", then it includes the possibility of both being true, unless they explicitly add "but not both".
When someone says "If A then B", and A turns out to be false, the statement is considered true regardless of what B is.

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I clarified a few of the statements. Dave now simply asserts Alder is telling the truth.

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As for the solutions, I will get to those later. (I had my full solution written down, but need to find it.)

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Yep, that works.

I thought that by having 13 different statements that

maybe

I might be able to stave off correct answers for a while. I wanted something that would take time and evidently this was not that.
Perhaps instead I should try to either
(1) make a murder riddle like those of Secago and Something_Smart, or
(2) make a murder mystery where you ask questions that I respond with yes/no/irrelevant.

Wait a sec...